n.空域；上空；空间；领空；广播时间
You're almost out of the operation airspace. 你们就快要离开作战空域了。
The jet entered Chinese airspace without permission. 那架喷气式飞机未经允许闯入中国领空。
The government claimed that the plane had illegally entered its airspace. 政府宣称这架飞机非法进入其领空范围。
