Remember, your question must be representative, who is not a waste of time to issue only problem is to drop your scores.

记住，你的问题必须是有代表性的，那些浪费时间的并非问题的问题只会是使你的分数下降。

youdao

Therefore I think whether degradation of grasslands is recently happened or happened a long time ago, the question only can be answered by local herdsmen.

因此，我觉得草地退化是近几十年发生的还是很早以前就有类似情况，只有当地的牧民清楚。

youdao

Therefore I think whether degradation of grasslands is recently happened or happened a long time ago, the question only can be answered by local herdsmen.

因此，我觉得草地退化是近几十年发生的还是很早以前就有类似情况，只有当地的牧民清楚。

youdao