国际贸易中,by sea,by vessel,by ship 有没有区别?

国际贸易中,by sea,by vessel,by ship 有没有区别? BY SEA 与BY SHIP 有什么区别? PLCHITTTAGONG SEA PORT BY VESSEL by sea freight 和 book vessel 的区别 by ship=by sea=? Have you s___ by ship on the sea? by sea,at sea,on the sea有什么区别?分别造句, take a ship 与 by a ship 的区别? "by sea"is another way of _(say)"by ship" what are the _(dif ship sfter ship__sailing by by ship的同义词? by ship是什么意思