Air can be pumped into the diving suit to increase buoyancy.
可以往潜水衣中打气增加浮力。
《柯林斯英汉双解大词典》
2
For example, that a fat man in a red suit flies through the air on a sleigh pulled by reindeer.
比如说，一个穿着红色外套的胖子坐在驯鹿拉着的雪橇上划过天空。
3
They pretended to take the cloth from the loom, and worked about in the air with big scissors, and sewed with needles without thread, and said at last: "the emperor's new suit is ready now."