We 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）！
1.在船[飞机,车]上
2.上车
1.在船[飞机,车]上,上船[飞机,车]
2.靠船边
3.在船上
4.在...上;向...上
5.在车上
6.靠舷
1.在船[飞机,车]上,上船[飞机,车]
2.靠船边
3.在船上
4.在...上;向...上
5.在车上
6.靠舷
1.on, onto, in, or into a ship, airplane, train, or other vehicle
2.in or into an organization or group
3.in baseball, on base as a runner