人们开始用铁路邮政车，并且在火车上分类整理。

They started having mail cars on trains and they started having postal sorting on the train.

youdao

我们将停留几分钟，这样你们可以看看铁路上的邮政车。

We'll stop here minutes you can later see a railway mail car.

youdao

我们将停留几分钟，这样你们可以看看铁路上的邮政车。

We'll stop here minutes you can later see a railway mail car.

youdao