• 基础释义
  • 例句
  • 柯林斯词典释义
例句
柯林斯高阶英汉双解学习词典释义
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    激光
    A laser is a narrow beam of concentrated light produced by a special machine. It is used for cutting very hard materials, and in many technical fields such as surgery and telecommunications.
    例句
    ...new laser technology... 新的激光技术 Researchers realised that a tunable laser beam might be useful in surgery. 研究人员意识到,可调谐激光束也许可以用在外科手术中。
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    激光器
    A laser is a machine that produces a laser beam.
    例句
    ...the first-ever laser, built in 1960. 有史以来第一台激光器,于1960年制造