大家都上车或上飞机，指大家都登陆某一交通工具，也可能是特定语境下有引申意义，请结合语境进行理解。
飞机或船上的全体人员
Early reports from the Iranian capital say all on board the plane were killed, along with at least 25 people on the ground.
来自伊朗首都德黑兰的最初报导说，这架飞机上的所有人全部丧生，另外还造成地面上至少25人死亡。
That ship and all hands on board were lost on the reef.
那条船连同全体船员都触礁遇难了。
on board在船（火车、飞机）上
on the board在董事会，将在会上讨论；在那块木板上
on the notice board在布告牌上；在警告牌上
