李惠琍：雨洪利用应被当作一个必要环节，是湿地的功能所在。

You would think that it is a "must be", in terms of actually utilizing the function of wetland.

youdao

李惠琍：雨洪利用应被当作一个必要环节，是湿地的功能所在。

You would think that it is a "must be", in terms of actually utilizing the function of wetland.

youdao