airspace
/ˈeəspeɪs/noun
mass noun
1- room available in the atmosphere immediately above the earth空域, 空间：
temples and mosques fight for airspace with skyscrapers.
庙宇和清真寺与摩天大楼争夺空间。
1.1
- the air available to aircraft to fly in, especially the part subject to the jurisdiction of a particular country领空, 空域。
1.2
- Law the right of a private landowner to the space above his land and any structures on it, which he can use for ordinary purposes such as the erection of signposts or fences【律】（土地私有人对其土地或建筑上方空域所享有的）空域使用权。
1.3
- space left to be occupied by air for purposes of insulation绝缘空气带。