FOR decades the Great Lakes region has seen a slow ebb.

几十年来，美国五大湖区的潮水在缓慢退减。

youdao

I encourage all the countries of the Great Lakes region to fully implement it.

我鼓励大湖区所有国家全面遵守这一议定书。

youdao

I encourage all the countries of the Great Lakes region to fully implement it.

我鼓励大湖区所有国家全面遵守这一议定书。

youdao