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TOEFL IELTS BNC: 4841 COCA: 3896

laser

Word family
la·ser /ˈleɪzə $ -ər/ ●●○ noun [countableC]  
1 Ta piece of equipment that produces a powerful narrow beam of light that can be used in medical operations, to cut metals, or to make patterns of light for entertainment 激光器
 laser surgery
激光(外科)手术
2. a beam of light produced by a laser 激光
Origin laser
(1900-2000) From "light amplification by stimulated emission of radiation"
la·ser noun
Chinese
Syllable

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