英汉词典

1. 在（船、飞机等）上
    If you are aboard a ship or plane, you are on it or in it.

aboard的翻译

    e.g. She invited 750 people aboard the luxury yacht, the Savarona...
           她邀请了750人乘坐豪华游艇“萨瓦罗纳”号。
    e.g. They said goodbye to him as he got aboard the train at Union Station.
           当他在联合火车站登上火车之际，他们向他道别。