aboardBrE/əˈbɔːd/NAmE/əˈbɔːrd/adverb,prepositionon or onto a ship, plane, bus or train在（船、飞机、公共汽车、火车等）上；上（船、飞机、公共汽车、火车等）SYNon boardWe went aboard.我们上了船。He was already aboard the plane.他已经登机了。The plane crashed, killing all 157 passengers aboard.飞机坠毁，机上 157 名乘客全部遇难。All aboard!(=the bus, boat, etc. is leaving soon)请大家上车（或船等）！（表示马上就要开了）Welcome aboard!(=used to welcome passengers or a person joining a new organization, etc.)欢迎各位乘客！；欢迎加盟（新组织等）！