on the airon radio or TV 在广播里或电视上 * The President will be on the air at 9∶15 tonight. 总统将于今晚9时15分发表广播讲话。 * What's on the air this evening? 今晚的广播内容是什么?on the air正在广播(指广播电台):The radio station is on the air,we all listen to its radio play.电台正在广播,我们都听它广播的广播剧。 |