on the air
US /ɑn ðɪ ɛr/
UK /ɒn ðɪ ɛə/
成语
在广播中, 在电视上, 播出
being broadcast on radio or television
示例:
•
The show goes on the air at 8 PM.
节目晚上8点播出。
•
She was nervous before going on the air for the first time.
她第一次上节目前很紧张。