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marking off pin

  • 划线针

专业释义

  • 划线针
  • 划线针
  • 划线插针

·2,447,543篇论文数据,部分数据来源于NoteExpress

权威例句

  • It is not easy to pin down exact dates in a hazy age, but Western historians are probably right in marking off the period 1500 to the present as the age of European global predominance.

    CNN: Building On A Golden Age

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