莱茵河流过鲁尔山谷的西部边界，水生生物无法在里面生长。

The Rhine River, which flows past the western edge of the Ruhr Valley, was devoid of marine life.

youdao

莱茵河流过鲁尔山谷的西部边界，水生生物无法在里面生长。

The Rhine River, which flows past the western edge of the Ruhr Valley, was devoid of marine life.

youdao