a lag of several seconds between the lightning and the thunder 闪电与打雷先后相差的几秒钟 a petrol pump 汽油泵 She blew up the flat tire with a bicycle pump. 她用自行车打气筒给瘪了的轮胎打气。
In a situation that would have been unthinkable a few years ago, a recent training course in Muscat for petrol-pump attendants was oversubscribed five times by Omanis themselves.