2. 外语
  3. In their search of precision, scientists have turned to atomic clocks that depend on various vibrating atoms or molecules to sup

In their search of precision, scientists have turned to atomic clocks that depend on various vibrating atoms or molecules to sup

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问题 In their search of precision, scientists have turned to atomic clocks that depend on various vibrating atoms or molecules to supply their "ticking".
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答案of—for
解析 in search for sth．为固定搭配，意为“寻找某物”。
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