1. My G-suit, now fully filled with air, compressed my legs to force the blood back into the upper part of my body.
    我的G服现在已经充满了气，紧紧地压住我的双腿，逼迫血液流回身体的上半部。

2. But belongs to the air, travelling it may be six thousand miles to and from its northern nesting home, feeding its flown young as it flies,
    在空中十分自如，可以飞行6，000英里，可以飞往北方做窝的老家，再从老家飞回；一边飞一边喂养会飞的雏燕，甚至在顶风时也能在气流中滑翔，似乎气流在帮它前进。这些鸟对我们是有益的，

3. Clouds hung over our air base, but I knew that soon I would be above the clouds, where the sun was shining.
    此时云层正笼罩在我们空军基地的上空，但我知道，很快我将升至云端之上，那里阳光灿烂。

4. He realizes its volume, as the space that the shape displaces in the air.
    他能意识到物体的体积，那就是它的形状有空气中所占的空间。

5. "Something really should be done!" he said and, after a little while, "something shall be done," and at last, with the air of a saviour, "I will certainly see that something is done."
    “真该设法解决一下了！”他说；过了一会儿又说：“一定会解决的”；到了后来，他便俨然像一位救世主似地说：“我一定亲自过问，给予解决。”

6. Out where there is no air, this phenomenon does not take place.
    在那遥远没有空气的地方, 不发生这种现象.

7. Open the window and air the room.
    打开窗子，给房间通通风。

8. One evening her husband came home with a triumphant air, holding in his hand a large envelope.
    一天晚上，她丈夫下班回来带着一副得意的神气，手里拿着一个大信封。

9. Once there, he would cling to the hand-rail until he reached the lower steps that the warmer tunnel air kept free of ice.
    一到那儿，他就紧抓着地铁通道口的扶手一直往下走，因为地铁内空气暖和,下面几级台阶没有冰雪。

10. Let´s go out for some fresh air.
    咱们出去呼吸点儿新鲜空气吧.