Grain issue is the key that economy of Heilongjiang reclamation area works all the time.

粮食问题一直是黑龙江垦区经济工作的重点。

youdao

Grain issue is the key that economy of Heilongjiang reclamation area works all the time.

粮食问题一直是黑龙江垦区经济工作的重点。

youdao