乘火車的用法和樣例：
例句
-
五歲以下的兒童乘火車通常免費。
Children under five usually travel free on trains. -
我們決定乘火車去。
We chose to go by train. -
乘火車要快得多。
It is quicker by far to go by train. -
我們乘火車到倫敦，然後換長途汽車。
We'll go by train as far as London, and then take a coach. -
他們乘火車到海岸，再從那裡乘船到中國。
They traveled by train to the coast and thenceforth by boat to China.
