on board什么词性?

on board什么词性? on board什么意思 be on board a ship中on board 是什么词性,为何后面又跟了一个名词结构 on leave什么词性 go on board the train中board的词性on board是介词短语,后面怎么能跟一个名词呢?可不可以直接说go on the train 和board the train?go aboard the train on board,on the board这两个词组有什么区别, to board the train 跟 get on the train 还可以去 board 什么东西. 信用证loading on board/dispatch/taking in charge什么意思 on board the plane中plane做什么成分 FOB (Free on Board) 装运港船上交货 是指什么? come on board on the board,on board, on a board ,ob board的区别大神们帮帮忙 on 还有on the board,on a notice board on board和on board的区别及用法,是on boards和on board。 keep on 后加什么词性 on the board和on board的区别, aboard 等于 on board吗 laden on board the vessel