laser

laser — noun

1. A laser is a device that sends out an extremely focused, intense ray of light. T

1.名詞B1
釋義

A laser is a device that sends out an extremely focused, intense ray of light. The ray is strong enough to cut through metal, remove hair or tattoos from skin, fix vision problems in eye surgery, and produce bright patterns for entertainment shows.

例句

The surgeon used a laser to fix Rania's blurry vision in just fifteen minutes.

medical context: laser surgery

Charlotte watched the laser cut sharp shapes into the metal during the factory visit.

同義詞
  • beam

    refers to the light itself rather than the device that produces it

  • light source

    a much more general term for anything that gives off light

文法句型

laser + noun (laser surgery / laser printer / laser pointer)

a/the + laser + verb (laser cuts / laser removes)

用法筆記

Often used before another noun to describe devices or treatments that use laser technology, such as a laser printer, laser surgery, or laser pointer.

常見錯誤

❌I bought a laser' (meaning a small pointing device).
✅I bought a laser pointer.
💡On its own, 'laser' usually refers to the machine itself; the common handheld device is called a 'laser pointer'.
❌The laser in my DVD player is broken.
✅The laser reader in my DVD player is broken.
💡The component inside a DVD player is usually called a 'laser reader' or 'laser lens', not just 'laser'.

laser — verb