That was before, but now we cant see such clean rivers.

之前，可是此时，我们能够看到这样干净的河流。

youdao

That was before, but now we cant see such clean rivers.

之前是，但此时我们不能看到这样干净的河流。

youdao

That was before, but now we cant see such clean rivers.

之前是，但此时我们不能看到这样干净的河流。

youdao