毛乌素是我国较大的沙区之一。

Maowusu is one of large sandy areas in our country.

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总有一些在沙区休息数条鲨鱼。

There are always several sharks resting on the sandy area.

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分析了林、草在沙区生态环境中的作用及如何进行还林还草；

Then, the action of restoring forest or grass and its method are analysised.

youdao

分析了林、草在沙区生态环境中的作用及如何进行还林还草；

Then, the action of restoring forest or grass and its method are analysised.

youdao