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作者词汇表达较丰富准确，不过学术词汇的积累还有很大的空间；行文稍显不流畅，应增加文中衔接词的使用；可适当增加从句和复杂句的使用，注意文中的几处句子错误；请注意分段。
on excessive packing is abuse phenomenont .Though it is now seems that this prediction is just a nonsense without any scientific support, it did provoke people’s thinking about environment. In awake of the prediction, we can’t help asking why this horrible prediction happen? I think one answer may be related to the environmental degradation. As we all can see and feel, the world’s environment is going downhill with severely polluted rivers and airs. More often we can’t see clearly the sun because of
