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

in the air正在醞釀中；
on the air播送，廣播；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在戰(zhàn)場上 例：He lost his life on the field.

178. in the market, on the market　　

in the market表示場所或地點，在市場上；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在陽光下；
under the sun地球上，全世界 例：people under the sun

180. in a voice, with one voice　　

in a voice出聲地；
with one voice異口同聲地 例：They refused with one voice.