be on air

US /bi ɑn eər/
UK /bi ɑn eər/
"be on air" picture
1.

播出, 直播

to be broadcast on radio or television

:
The show will be on air live at 8 PM.
節目將於晚上8點現場直播
The news report is about to be on air.
新聞報導即將播出