乘地铁和乘飞机用介词表达除了by plane by subway还可以用in the subway

问题描述:

乘地铁和乘飞机用介词表达除了by plane by subway还可以用in the subway
in the subway on the subway in the plane on the plane 到底用on 还是 in
我疑惑了,有没有明确的答案,还是俩都可以

travel IN a private plane
travel ON a slow train