(a device that produces) a powerful, narrow beam of light that can be used as a tool to cut metal, to perform medical operations, or to create patterns of light for entertainment
laser beam激光束
laser surgery激光手术
更多例句
The tube that carries the laser is introduced into the abdomen through a small cut in the skin.
The laser beam heals the eye painlessly.
The laser guidance system dramatically increases the likelihood that the missile will strike home.
During surgery, doctors sometimes use a laser beam to vaporize tiny blood vessels.