2. 外语
  3. This method could also reduce the amount of garbage piling up on the earth.

This method could also reduce the amount of garbage piling up on the earth.

admin2008-11-13  23
问题 This method could also reduce the amount of garbage piling up on the earth.
选项
答案这种方法也能减少堆积在地球上的垃圾。
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