a device that gives out light in which all the waves oscillate (= change direction and strength) together, typically producing a powerful beam of light that can be used for cutting metal, in medical operations, etc. 激光器 a laser beam 激光束 a laser navigation device 激光导航装置 The barcodes on the products are read by lasers. 产品上的条码是用激光读取的。 a laser show (= lasers used as entertainment) 激光表演 She's had laser surgery on her eye. 她做了眼部激光手术。 laser treatment/therapy 激光治疗/疗法
Oxford Collocations Dictionaryadjective- powerful
- infrared
- use
- aim
- fire
- …
- beam
- blast
- light
- …
Word Origin1960s: acronym from light amplification by stimulated emission of radiation, on the pattern of maser.
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noun
laser
Medical equipment: catheter, defibrillator, drain...
Describing machines and pieces of equipment: all-singing, all-dancing, analog, analogue...
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