la·ser

noun

/ˈleɪzə(r)/

/ˈleɪzər/

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
Topics Physics and chemistryc1
Oxford Collocations Dictionary
adjective
- powerful
- infrared
verb + laser
- use
- aim
- fire
- …
laser + noun
- beam
- blast
- light
- …
Word Origin1960s: acronym from light amplification by stimulated emission of radiation, on the pattern of maser.

单词	laser
释义	la·ser noun /ˈleɪzə(r)/ /ˈleɪzər/ 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 Topics Physics and chemistryc1 Oxford Collocations Dictionaryadjective powerful infrared verb + laser use aim fire … laser + noun beam blast light … Word Origin1960s: acronym from light amplification by stimulated emission of radiation, on the pattern of maser.
随便看	not know you are born not know your arse from your elbow not later than not later than… not-least not leave sb’s side not leave somebody’s side not let the grass grow under feet not let the grass grow under your feet not lift a finger not-lift-a-finger not lift a finger to do something not lift a hand not lift a hand to do something not lift/raise a finger/hand not lift/raise a finger/hand (to do something) not lift/raise a finger/hand to do something not likely not likely! not look back not look good (not) look yourself not look yourself not lose lose no sleep over something not lose sleep/lose no sleep over something