ph.

1. She didn't know she was on the air when she said those crazy things.
当她说那些疯狂事的时候，她不知道已经在广播了。

2. That program has been on the air for 25 years now.
那节目已播放了二十五年了。

3. That radio show is still on the air.
那个广播剧还在播送。

1. 正在播出的：adj 实况转播的;活的;生动的;精力充沛的 | on the air 正在播出的 | boss n 老板;上司

2. 广播：He's always running after her.他一直在追求她? | 6. on the air广播 | We will be on the air in five minutes. 我们五分钟以后开始广播?

3. (用无线电,电视)播送：on one's own 独立地,独自地 | on the air (用无线电,电视)播送 | on the radio 通过收音机,通过广播

4. 播出：8. in the air 空中,在流传 | on the air 播出 | 9. in the way 挡路,障碍,用~~方法