Smoking is not allowed on board the aircraft.
1个回答

When you are on board a train,ship,or aircraft,it means you are on it or in it.

你所说的on board the aircrafe,指的是正在飞机上的意思,在飞机上自然是on board the aircrafe,不过你如果在地上,用的就是on the aircrafe,(ps:on broad还有登机的意思,希望不要混淆)