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.

　　178. in the market, on the market

　　in the market表示场所或地点，在市场上;例：He sells fish in the market.

　　on the market出售 例：Fresh vegetables are on the market now.

　　179. in the sun, under the sun

　　in the sun在阳光下;

　　under the sun地球上，全世界 例：people under the sun

　　180. in a voice, with one voice

　　in a voice出声地;

　　with one voice异口同声地 例：They refused with one voice.