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TOEFL IELTS BNC: 4841 COCA: 3896
laser
/ˈleɪzə(r) ||; ˈlezɚ/noun [C] a device that produces a controlled ray of very powerful light that can be used as a tool 激光(器);雷射(器)
TOEFL IELTS BNC: 4841 COCA: 3896
laser/ˋlezɚ; ˈleIzə/ n [C] a piece of equipment that produces a powerful narrow beam of light, or the beam of light itself 激光器﹐激光装置﹔激光: laser surgery 激光(外科)手术
TOEFL IELTS BNC: 4841 COCA: 3896
laser laserlasers nounan instrument that makes a very strong line of light (called a laser beam). Some lasers are used to cut metal and others are used by doctors in operations.

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