lighter-than-air

lighter-than-air 基本解释

a. 轻于空气的

词组短语

1、lighter-than-air craft 轻于空气的航空器

2、lighter than air aircraft 比空气轻的飞机

3、lighter than air flight 比空中飞行轻

4、lighter than air zhao cong 比空气轻的赵聪

5、lighter than air 比空气轻

lighter-than-air 用法和例句

1、Hydrogen is much lighter than air.

氢比空气轻得多。

2、An airship depends on a gas that is lighter than air.

而飞艇依靠的是一种比空气轻的气体。

3、A balloon rises because it is lighter than air.

气球之所以能够飘升，是因为它比空气轻。

4、Hydrogen is a useful gas for balloons. It is lighter than air.

氢气对于气球来说是一种有用得气体，它比空气轻。

5、Balloons are aerostats, which means that are lighter than air when inflated.

气球是轻飞行器，也就是说，充气后，它们会比空气轻。

6、Being both lighter than air and nonflammable, helium is used to inflate balloons and airships.

由于既比空气轻又不可燃，氦用作充气球和飞艇。

重点词汇

lighter n. 点火者, 点灯工人, 打火机, 驳船 vt. 以驳船搬运

than conj. 比, 除...外 prep. 比