剑桥雅思13精听Test3section4

日期:2019/01/03
剑桥雅思13精听Test3section4

Test3 Section3

英文精听

OK, Jim. You wanted to see me about your textile design project.

That's right. I've been looking at how a range of natural dyes can be used to colour fabrics like cotton and wool.

Why did you choose that topic?

Well, I got a lot of useful ideas from the museum, you know, at that exhibition of textiles.

But I've always been interested in anything to do with colour.

Years ago, I went to a carpet shop with my parents when we were on holiday in Turkey, and I remember all the amazing colors.

They might not all have been natural dyes.

Maybe not, but for the project I decided to follow it up.

And I found a great book about a botanic garden in California that specialises in plants used for dyes.

  1. So, in your project, you had to include a practical investigation.

Yeah. At first I couldn't decide on my variables.

I was going to just look at one type of fibre for example, like cotton. . .

And see how different types of dyes affected it?

Yes. Then I decided to include others as well.

So I looked at cotton and wool and nylon.

With just one type of dye?

Various types, including some that weren't natural, for comparison. OK.

So, I did the experiments last week.

I used some ready-made natural dyes.

I found a website which supplied them, they came in just a few days.

But I also made some of my own.

That must have taken quite a bit of time.

Yes, I'd thought it'd just be a matter of a teaspoon or so of dye.

And actually that wasn't the case at all.

Like I was using one vegetable, beetroot, for a red dye.

And I had to chop up a whole pile of it.

So it all took longer than I'd expected.

One possibility is to use food colorings.

I did use one. That was a yellow dye, an artificial one. Tartrazine?

Yeah. I used it on cotton first. It came out a great colour.

But when I rinsed the material, the colour was just washed away.

I'd been going to try it out on nylon, but I abandoned that idea.

Were you worried about health issues?

I'd thought if it's a legal food colouring, it must be safe.

Well, it can occasionally cause allergic reactions, I believe.

So what natural dyes did you look at?

Well, one was turmeric.

The colour's great, it's a really strong yellow.

It's generally used in dishes like curry.

It's meant to be quite good for your health when eaten.

But you might find it's not permanent when it's used as a dye-a few washes, and it's gone.

Right, I used beetroot as a dye for wool.

When I chop up beetroot to eat I always end up with bright red hands.

But the wool ended up just a sort of watery cream shade.

Disappointing. There's a natural dye called Tyrian purple. Have you heard of that?

Yes. It comes from a shellfish, and it was worn in ancient times.

But only by important people as it was rare.

I didn't use it. It fell out of use centuries ago, though one researcher managed to get 

hold of some recently.

But that shade of purple can be produced by chemical dyes nowadays.

Did you use any black dyes?

Logwood. That was quite complicated.

I had to prepare the fabric so the dye would take.

I hope you were careful to wear gloves.

Yes. I know the danger with that dye.

Good. It can be extremely dangerous if it's ingested.

Now, presumably you had a look at an insect-based dye?

Like cochineal, for example?

Yes. I didn't actually make that,

I didn't have time to start crushing up insects to get the red colour and anyway 

they're not available here.

But I managed to get the dye quite easily from a website. But it cost a fortune.

I can see why it's generally just used in cooking, and in small quantities.

Yes, it's very effective, but that's precisely why it's not used as a dye.

I also read about using metal oxide.

Apparently you can allow iron to rust while it's in contact with the fabric, and that 

colours it.

Yes, that works well for dying cotton.

But you have to be careful as the metal can actually affect the fabric

and so you can't expect to get a lot of wear out of fabrics treated in this way.

And the colours are quite subtle, not everyone likes them.

Anyway, it looks as if you've done a lot of work. . .

中英对照

OK, Jim. You wanted to see me about your textile design project.

好的,Jim。你想让我看看你的纺织品设计研究课题。

That's right. I've been looking at how a range of natural dyes can be used to colour fabrics like cotton and wool.

是的。我正在研究一系列的天然染料如何给像棉花和羊毛这种材料染色。

Why did you choose that topic?

你为什么选择这个课题呢?

Well, I got a lot of useful ideas from the museum, you know, at that exhibition of textiles.

恩,我从博物馆里汲取了很多有用的想法,你知道的,就在纺织品展那里。

But I've always been interested in anything to do with colour.

但是我一直对和颜色相关的一切都很感兴趣。

Years ago, I went to a carpet shop with my parents when we were on holiday in Turkey, and I remember all the amazing colors.

很多年以前,我和我父母去土耳其旅游的时候进了一家地毯商店,我仍然记得那些美妙的颜色。

They might not all have been natural dyes.

它们可能不完全都是自然染料染的。

Maybe not, but for the project I decided to follow it up.

可能不是,但是我想做一个延续这个的课题。

And I found a great book about a botanic garden in California that specialises in plants used for dyes.

我发现一本关于加利福尼亚植物园的很棒的书,专攻用作染料的植物。

  1. So, in your project, you had to include a practical investigation.

好的,所以在你的课题中,你得包括实际调查。

Yeah. At first I couldn't decide on my variables.

是的。刚开始我没法决定我的变量。

I was going to just look at one type of fibre for example, like cotton. . .

我就想先研究一种类型的纤维,比如说,棉花...

And see how different types of dyes affected it?

然后看看不同染料是如何影响它的?

Yes. Then I decided to include others as well.

对。然后我决定把其他的也包括进来。

So I looked at cotton and wool and nylon.

所以我研究了棉花、羊毛和尼龙。

With just one type of dye?

只是一种染料吗?

Various types, including some that weren't natural, for comparison. OK.

很多种,包括非自然的染料,用作对比。好的。

So, I did the experiments last week.

所以,我上周做了实验。

I used some ready-made natural dyes.

我用了一些现成的自然染料。

I found a website which supplied them, they came in just a few days.

我找到了一个提供这些材料的网站,几天就到了。

But I also made some of my own.

但是我自己也做了一些。

That must have taken quite a bit of time.

那肯定花了很多时间。

Yes, I'd thought it'd just be a matter of a teaspoon or so of dye.

是的,我本来觉得只需要一茶匙左右的染料。

And actually that wasn't the case at all.

后来发现完全不是这样。

Like I was using one vegetable, beetroot, for a red dye.

就像我在使用一种蔬菜,也就是甜菜根做红色燃料的时候。

And I had to chop up a whole pile of it.

我得切上一堆原材料。

So it all took longer than I'd expected.

所以比我预期花了更多的时间。

One possibility is to use food colorings.

有一种可能是使用食物染色。

I did use one. That was a yellow dye, an artificial one. Tartrazine?

我确实用了。那是一种黄色染料,人工的。酒石黄吗?

Yeah. I used it on cotton first. It came out a great colour.

是的,我刚开始在棉花上用了它。颜色很好看。

But when I rinsed the material, the colour was just washed away.

但是当我漂洗材料的时候,颜色全被洗掉了。

I'd been going to try it out on nylon, but I abandoned that idea.

我本来想在尼龙上试一下,但是我放弃了那个想法。

Were you worried about health issues?

你担心健康问题吗?

I'd thought if it's a legal food colouring, it must be safe.

我觉得如果它是合法的食物染色剂的话,应该是安全的。

Well, it can occasionally cause allergic reactions, I believe.

恩,但是它有时候会导致一些过敏反应。

So what natural dyes did you look at?

所以你研究了什么自然染料呢?

Well, one was turmeric.

哦,一个是姜黄。

The colour's great, it's a really strong yellow.

那个颜色很棒,是非常明亮的黄色。

It's generally used in dishes like curry.

它一般会在咖喱这种菜里面用到。

It's meant to be quite good for your health when eaten.

所以吃起来对身体健康很好。

But you might find it's not permanent when it's used as a dye-a few washes, and it's gone.

但是你可能发现如果作为染料的话,它不够持久——洗几次就全都掉色了。

Right, I used beetroot as a dye for wool.

对,我用甜菜根给羊毛染色了。

When I chop up beetroot to eat I always end up with bright red hands.

每次切甜菜根吃的时候,我的手都会是红红的。

But the wool ended up just a sort of watery cream shade.

但是羊毛只是有点水黄色的阴影。

Disappointing. There's a natural dye called Tyrian purple. Have you heard of that?

太令人失望了。有一种叫做泰尔红紫的天然染料。你听说过吗?

Yes. It comes from a shellfish, and it was worn in ancient times.

是的,它取自于一种贝类,古代的时候有人穿。

But only by important people as it was rare.

但是只有那些重要人物才会穿,因为它很珍稀。

I didn't use it. It fell out of use centuries ago, though one researcher managed to get 

hold of some recently.

我没有用它。几个世纪之前它就不再使用了,尽管有一个研究人员最近想做出一些。

But that shade of purple can be produced by chemical dyes nowadays.

但是那种紫色现在可以通过化学染剂做出来。

Did you use any black dyes?

你用了黑色染料吗?

Logwood. That was quite complicated.

洋苏木。那真的很复杂。

I had to prepare the fabric so the dye would take.

我得准备染料能够染上的材料。

I hope you were careful to wear gloves.

我希望你带了手套。

Yes. I know the danger with that dye.

是的,我知道那种染料存在危险。

Good. It can be extremely dangerous if it's ingested.

好的。如果不小心食用的话,它真的超级危险。

Now, presumably you had a look at an insect-based dye?

现在,你大概已经研究过了昆虫染料了吧?

Like cochineal, for example?

比如说,胭脂虫红?

Yes. I didn't actually make that,

是的。事实上我并没有做,

I didn't have time to start crushing up insects to get the red colour and anyway they're not available here.

因为我没有时间碾压昆虫来提取红色,而且这里没有胭脂虫。

But I managed to get the dye quite easily from a website. But it cost a fortune.

但是我能从一个网站上得到这种染料。但是很贵。

I can see why it's generally just used in cooking, and in small quantities.

我知道它为什么通常只用于烹饪了,而且量很小。

Yes, it's very effective, but that's precisely why it's not used as a dye.

是的,它非常有效,但是那可能是它没有用做一种染料的原因。

I also read about using metal oxide.

我还读了一些有关使用金属氧化物的书。

Apparently you can allow iron to rust while it's in contact with the fabric, and that 

colours it.

当铁和织物接触的时候,你可以让铁生锈,就会给织物上色。

Yes, that works well for dying cotton.

是的,这样给棉花染色挺好的。

But you have to be careful as the metal can actually affect the fabric

但是你得很小心,因为金属会影响织物,

and so you can't expect to get a lot of wear out of fabrics treated in this way.

所以你做很多使用这种方法制作的织物成衣。

And the colours are quite subtle, not everyone likes them.

而且颜色比较淡,不是所有人都喜欢。

Anyway, it looks as if you've done a lot of work. . .

但是,能看出来你做了很多工作...

你和雅思的故事 - Go Hard or Go Home

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