布与线：羊毛、棉与丝

旁白 neutral

These are other threads

这些是另一些线。

旁白 neutral

They go across the first threads

它们横着穿过最先的那些线。

旁白 neutral

They go under and over them

它们从下面和上面交替穿过。

旁白 neutral

This is cloth

这就是布。

旁白 neutral

This is a roll of cloth

这是一卷布。

旁白 neutral

We make clothing of cloth. We make cloth of threads

我们用布做衣服，用线织成布。

旁白 neutral

We make threads from wool and cotton and silk

我们用羊毛、棉花和丝来做线。

旁白 neutral

We get wool from sheep

我们从绵羊身上得到羊毛。

旁白 neutral

Wool is the thick warm hair of sheep

羊毛是绵羊身上又厚又暖的毛。

旁白 neutral

Men take the wool off the sheep's back with scissors

人们用剪刀把羊毛从绵羊背上剪下来。

旁白 neutral

We make threads from the wool by twisting the hairs round and round

我们把羊毛一圈圈地捻起来，做成线。

旁白 neutral

That wheel is going round

那个轮子在转。

旁白 neutral

It is giving a twist to the thread. It is twisting the thread

它在给线加捻，把线捻起来。

旁白 neutral

We get cotton from the cotton plant

我们从棉株上得到棉花。

旁白 neutral

Cotton is the soft white hair round the seeds of the plant

棉花是长在棉株种子周围又软又白的绒毛。

旁白 neutral

These are different sorts of seeds

这些是不同种类的种子。

旁白 neutral

Plants come up from seeds which come from other plants of the same sort

植物从种子里长出来，而种子来自同一种的其他植物。

旁白 neutral

We get silk from the silkworm

我们从蚕身上得到丝。

旁白 neutral

This worm makes a soft strong thread of silk and puts it round itself like a coat

这条蚕吐出又软又结实的丝，像外套一样把自己裹起来。

旁白 neutral

Wool, cotton, and silk are different sorts of cloth

羊毛、棉和丝是不同种类的布。

旁白 neutral

We make clothing of all these sorts of cloth

我们用所有这些布来做衣服。

旁白 neutral

When the weather is cold we put on thick warm wool clothing

天冷的时候，我们穿又厚又暖的羊毛衣服。

旁白 neutral

When the weather is warm we put on thin cotton clothing

天暖的时候，我们穿又薄的棉布衣服。

旁白 neutral

Cotton clothing is not as warm as wool clothing

棉布衣服不像羊毛衣服那样暖。

旁白 neutral

Thick clothing keeps us warm. It keeps us warmer than thin clothing

厚衣服让我们暖和，它比薄衣服更保暖。

旁白 neutral

Thick cloth keeps air in it, between the threads

厚布把空气留在织线之间。

旁白 neutral

The air does not let heat go through it

这些空气不让热量穿过去。

旁白 neutral

A thick roof keeps the heat of the house in

厚屋顶把房子里的热量留住。

旁白 neutral

A thin roof lets the heat go through it

薄屋顶让热量透出去。

旁白 neutral

A thick roof keeps the heat of the sun out

厚屋顶把太阳的热挡在外面。