Nineteen river basins are shared by five or more countries.

每天要吃五份或更多的水果和蔬菜。

youdao

Finally, some original ideas about research of lakes and river basins are put forward.

对湖泊研究和流域研究提出独到的思路。

youdao

Finally, some original ideas about research of lakes and river basins are put forward.

对湖泊研究和流域研究提出独到的思路。

youdao