VOA慢速英语:The Evolution of Spacesuits

短语讲解：

1. Many questions had to be answered over sixty years ago when officials first began to think about placing a human being in space.

think about 考虑
例句：Elinor is thinking about emigrating to the United States.
埃莉诺正在考虑移居美国。

2. One of the most important was how to design the special clothing needed to protect a person from the dangers of the space environment.

protect from 保护…免受…
例句：An umbrella will protect you from the rain.
雨伞可以保护你不至于淋雨。

3. Ultraviolet radiation from the sun is another environmental risk in space.

ultraviolet radiation 紫外线

4. Today, aircraft are designed to prevent air pressure changes at extreme heights.

be designed to 被设计来….
例句：This course of study is designed to help those wishing to teach abroad. 
 这门课程是为帮助想到国外教书的人而专门开设的。 

5. Wiley Post made this protective clothing with the help of the Phillips Petroleum Company and the B-F Goodrich Company.

with the help of 借助于，利用
例句：With the help of this machine, we can make a new product.
利用这台机器, 我们能够生产一种新产品。

6. It could hold oxygen and provide the needed air pressure to protect his body from the lack of pressure at extreme heights.

lack of 缺乏，缺少
例句：The lack of rain aggravated the already serious lack of food. 
 缺少雨水加重了业已严重的食物缺乏。

7. The clothing was similar to that invented by Wiley Post. 

be similar to 与…相似
例句：Their house is similar to ours, but ours has a bigger garden. 
 他们的房子和我们的差不多, 只是我们的花园大些。

8. It is like putting on a large pair of pants that have boots built in the bottom of the legs.

in the bottom of 在…底部
例句：There is some deposit in the bottom of the flask. 
 这只烧瓶的底部有些沉淀物。 

9. It is made of a hard plastic-like material.

be made of 由…制成 （物理变化，看得到原材料）
be made from 由…制成 （化学变化，看不到原材料）
例句：Desk is made of wood while paper is made from tree.
课桌是由木头制成，纸是由树制成。

10. All of the spacesuits that have returned from space belong to the Smithsonian Institution.

belong to 属于
例句：Does this house belong to Mr. Winter?
这幢房子是温特先生的吗?

11. Smithsonian experts must pay special attention to protect these suits because they help to tell the story of space exploration.

pay attention to 注意，关心
例句：No attention was paid to his advice.
他的建议没有引起注意。