laser

/ˈleɪzə/ n.
标准词条 CET-4CET-6IELTS
一句话记住

激光；激光器

释义与例句

n. 激光；激光器
a device that produces a powerful, narrow beam of light, or the beam itself
  1. The scanner uses a laser to read the barcode.
    扫描仪利用激光读取条形码。
  2. The surgeon removed the growth with a laser.
    外科医生用激光切除了这块增生组织。
展开其余 1 条例句
  1. Laser measurements can determine distances with great accuracy.
    激光测量可以非常精确地测定距离。

词族与关联词

易混词（形近或义近，注意区别）
  • laser beam 激光束
    laser 可指产生激光的设备，也可在非正式用法中指激光本身；laser beam 明确指设备发出的狭窄激光束。
    A laser beam was directed at the mirror. 一束激光被射向镜面。
常见搭配
  • laser beam 激光束
    The laser beam cut through the thin metal sheet. 激光束切开了这块薄金属板。
  • laser surgery 激光手术
    She had laser surgery to correct her eyesight. 她接受了矫正视力的激光手术。