You can always fall back on him when you are in difficulties.你碰到困难时总是可以求助于他.Doctors sometimes fall back on old cures.有时医生们求助于老的疗法.When necessary, instinct is the most reliable resource you can fall back on.必要时，最保险的办法就是凭直...
Casualties had to be brought to hospital by air.伤者不得不用飞机送往医院。The pilot was given clearance to land by air traffic control.飞行员得到空中交通管制站发出的着陆许可。to send goods by air freight空运货物...
他假惺惺地称自己对战术一窍不通。He disingenuously remarked that he knew nothing about strategy.他对这种假惺惺的谄谀不屑一顾.He is above the insincere flattery.别在我面前假惺惺的了.Don't shed crocodile tears to me....