“空域”怎么读？

机群将被迫在国际空域飞行.The squadron would be forced to keep to international skies.夹带率应几乎随自由空域高度成指数递减.The entrainment rate should closely decrease exponentially with freeboard height.该空域用雷达扫描以便发现敌机踪迹.The area was scanned for signs...

“空域”的英语可以翻译为：[航空] airspace ...