“上空”怎么读？

他谈话时，一架军用喷气式飞机在镇子上空呼啸而过。As he talked, an airforce jet screamed over the town.树林上空飘浮着一股烟。There was a drift of smoke above the trees.一架带有丹麦标记的飞机从他的船上空飞过。A plane with Danish markings was over-flying his vessel....

“上空”的英语可以翻译为：in the sky，overhead，midair，high up in the air ...