The Ruhr had been the engine room of German industry since the mid-19th century.

自19世纪中叶以来，鲁尔便是德国工业的发动机房。

youdao

The Ruhr had been the engine room of German industry since the mid-19th century.

自19世纪中叶以来，鲁尔便是德国工业的发动机房。

youdao