This was before the steam locomotive, and canal building was at its height.

这些事情都发生在蒸汽火车出现之前，而且，运河修建在那时正处于繁荣时期。

youdao

This was before the steam locomotive, and canal building was at its height.

这些事情都发生在蒸汽火车出现之前，而且，运河修建在那时正处于繁荣时期。

youdao