People all over the world should join together in making efforts to control pollution and create a clean world.

全世界人们应共同努力，控制污染，创造一个干净的世界。

youdao

People all over the world should join together in making efforts to control pollution and create a clean world.

全世界人们应共同努力，控制污染，创造一个干净的世界。

youdao