| 单词 | laser |
| 释义 | laserlaser /ˈleɪzɚ/ ●●○ noun [countable] science, physics 1a piece of equipment that produces a powerful narrow beam of light which can be used in medical operations, to cut metals, etc.: laser surgery2a beam of light produced by this machine [Origin: 1900–2000 from “light amplification by stimulated emission of radiation”] |
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