军考英语：易混英语词汇辨析：in the field, on the field

　　176. in the air, on the air, in the sky

　　in the air正在酝酿中;

　　on the air播送，广播;例：His show is on the air at 6:00 tonight.

　　in the sky在天空中

　　177. in the field, on the field

　　in the field在野外;

　　on the field在战场上 例：He lost his life on the field.