2. 外语
  3. We see that surface is covered with tiny "hills and valleys".

We see that surface is covered with tiny "hills and valleys".

admin2015-11-27  31
问题 We see that surface is covered with tiny "hills and valleys".
选项
答案我们看到，该表面布满了微小的凹凸不平之处。
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专业英语八级

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