2. 外语
  3. We can eliminate pollution completely by the year of 2008. To spoil something by bringing in the impure which make it unfit or

We can eliminate pollution completely by the year of 2008. To spoil something by bringing in the impure which make it unfit or

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问题 We can eliminate pollution completely by the year of 2008.
To spoil something by bringing in the impure which make it unfit or unclear to use, we call it______.
选项
答案to pollute or contaminate
解析 第3段的第2句中弄脏是指因带进杂质而使某个东西不清洁或不适合使用。
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大学英语六级

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