VOA慢速英语:How to Make Your Own Solar Water Heater

短语讲解：

1. The system we are going to describe is based on a design developed some years ago in Afghanistan.

be based on 建立在…基础上
例句：This story is based on facts.
这个故事是以事实为基础的。

2. One part is made of a sheet of metal painted black.

be made of 由…造成
例句：The bag is made of leather.
这包是用皮革做的。
a sheet of 一张…，一片…
例句：She wrapped a sheet of paper around the book.
她用一张纸把这本书包起来。

3. The collector is placed in contact with the water.

in contact with 与…接触
例句：Have the children been in contact with disease?
孩子们同这种疾病有过接触吗？

4. There are several kinds of metal sheets that can be used for the collector. Corrugated metal will work very well.

be used for 用来做…
例句：Hemp can be used for cloth and ropes.
大麻可用来做衣服和绳子。

5. Corrugated sheets are often used as roofs on housing.

be used as 被当做…用，被用作…
例句：Charcoal can be used as a fuel.
木炭可以用作燃料。

6. Two rubber pipes are attached to the water storage tank.

attach to结，系，贴；装；连接
例句：A tag was attached to each article.
每件物品上都贴上了标签。