单词	nanosecond
释义	nan·o·sec·ond (nănə-sĕk′ənd) n. Abbr. ns or nsec One billionth (10-9) of a second.
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英语词典包含135693条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。