1. He was gasping for air and seemed close to exhaustion.
    他气喘吁吁, 似乎快筋疲力尽了。

2. He had an air of haughty aloofness.
    他有一种高傲的神情。

3. However, it is too expensive to go by air.
    然而, 坐飞机太贵了.

4. Humidity means the amount of moisture in the air.
    湿度指空气中水汽的含量。

5. His answer was to lift the vessel out of the water by making it ride on a cushion of air, no more than one or two feet thick. This is done by a great number of ring-shaped air jets on the bottom of the craft.
    他的解决办法是把船体提离水面，让船在一个气垫上行驶，气垫只有一两英尺厚。船底装上大量环状喷气嘴以实现这一目的。

6. He dresses, washes, and goes out to do exercises in the fresh morning air.
    他穿好衣、洗完脸，就走到室外，在清爽的晨风中做早操，

7. However, the collective smoke from thousands of factories, over the past two centuries, has caused enormous increases in air pollution levels worldwide.
    但是，在过去的两个世纪中，从千万家工厂排放出的烟尘已大大加剧了全球大气的污染度。

8. Human population growth is creating food shortages, problems of air quality, and changes in weather patterns.
    人口的增长带来了粮食短缺、空气质量降低、天气状况变化等问题。

9. Dealer: Yes, air conditioning, tinted window, steel-belted tires, costom floormats, and sunroofs are all optional.
    商人:是的,冷气,淡色窗,连钢带的轮胎,定做的车垫和通风孔都是可自由选择的东西.

10. And the pudding went flying through the air, narrowly missed my aunt, and crashed on the dining table with considerable force.
    布丁飞到半空，从姑母身边擦过，然后狠狠地砸在餐桌上。