laser

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柯林斯词典

laser /ˈleɪzə/ (lasers)

1. N-COUNT A laser is a narrow beam of concentrated light produced by a special machine. It is used for cutting very hard materials, and in many technical fields such as surgery and telecommunications. 激光
...new laser technology. …新的激光技術。

剑桥词典

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 .
There was a laser show by the harbour .