You could go to Shanghai by train. 你可以乘火车去上海。
A: You could go to Shanghai by train.
A: 你可以乘火车去上海。
B: I like travelling by train. It's more interesting.
B: 我喜欢乘火车旅行。乘火车更有趣
A: Well, if you have time, you should consider it.
A: 哦，如果你有时间的话，应该考虑乘火车。
B: How long does it take?
B: 乘火车需要多长时间？
A: You can catch the overnight train. It takes about 12 hours.
A: 你可以乘夜车。需要12个小时。
B: I'll think about it. Maybe I will take the train.
B: 我会考虑的。也许我会乘火车去。