1.
Although the air over the earth becomes hot, the air over the water stays cool.
虽然地球上空的空气变热，而水面上空的空气却仍保持凉爽。
2.
Carrier-Based aircraft patrolled aBove.
以航空母舰为基地的飞机在上空巡逻。
3.
Polluted air hangs over the city.
城市上空被污染的空气所笼罩。
4.
The streets were empty except for a few stray passers-by.
除了寥寥几个行人外, 街上空空如也.
5.
Unit 101 The Ozone Hole：Why over Antarctica?
臭氧空洞：为什么出现在南极洲上空?
6.
Frames of Subspaces in Hilbert Space;
Hilbert空间上的子空间框架
7.
Look up at the spaceship, the spaceship, the spaceship.
向上看太空飞船，太空飞船，太空飞船。
8.
a return trip, voyage, flight, etc
陆上、 海上、 空中等的回程.
9.
and the bare ground had been varnished with ice.
空地上面都涂上层冰。
10.
"Hot air is lighter than colder air," they said. "That is why hot air goes upwards.
他们说：“热空气比冷空气轻，因而热空气会向上升。
11.
complex vector space
复矢量空间; 复数域上的向量空间; 复向量空间
12.
a unit of the U.S. air Force larger than a wing and smaller than an air force.
"美国空军编制单位.在航空联队以上,航空队以下."
13.
A blank unprinted area, as of an advertisement.
空白处空白未印字的区域，如广告上的空白部分
14.
Hard Disk Space reports the available space on your local hard disks.
硬盘空间报告本地硬盘上的可用空间。
15.
The little-baskets were empty and the ground was covered with pieces of paper.
废物筐空空如也，而地上全是纸片。
16.
The little-baskets were emply and the ground was covered with pieces of paper.
废物筐空空如也, 而地上全是纸片。
17.
To transport by air, as when ground routes are blocked.
空运陆上交通断绝时空中运输
18.
God gives air to men; the law sells it to them.
上帝把空气给人，法律却拿空气做买卖。