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[今日口语] She is in a quandary about which university to choose.

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upper mantle

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上地幔
  1. Like the core of earth, the mantle can also be divided into two concentric layers, the lower mantle and the upper mantle.
    就像地球的核部一样。地幔也可分为两个同心圆圈层,下地幔和上地幔。收藏

名词解释:

  • the upper part of the mantle
 
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