核心畫面
Picture a machine that gathers light into one perfectly straight, very narrow line — strong enough to cut steel or to work inside an eye. Ordinary light spreads everywhere; this one goes in a single direction and stays thin the whole way.
可以想成：一台把光收攏成一條筆直細線的機器——細到能在眼睛裡動手術，強到能切鋼板。一般的光是往四面八方散開的，這條線…更多收起
可以想成：一台把光收攏成一條筆直細線的機器——細到能在眼睛裡動手術，強到能切鋼板。一般的光是往四面八方散開的，這條線卻只往一個方向走，而且一路都不變粗。這個畫面同時解釋了為什麼英文可以拿 laser 來形容注意力：laser focus 就是把心神收成那一條線。原始詞典資料11 筆記錄
以下是外部詞典記錄的用法，原文照列，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
Lasernoun
- 1
nauticaltransportA simple type of dinghy
lasernoun詞源 1/ˈleɪz.ə(ɹ)/
- 1
A device that produces a monochromatic, coherent beam of light.
- 2
A beam of light produced by such a device; a laser beam.
- 3
A laser printer.
- The bad news is that nearly every color laser is too big to share a desk with comfortably.
laserverb詞源 1/ˈleɪz.ə(ɹ)/
- 1
To cut, destroy or treat with a laser.
- I'm having my eyes lasered to correct my astigmatism.
- 2
informalhobbieslifestylesportsTo throw or kick with laser-like precision.
- None was any more sensational than No.6, a fantastic 27-23 last-gasp win over the Arizona Cardinals, cemented by a brilliant toe-sticking TD catch by Santonio Holmes in the back of the end zone with 35 seconds remaining on a pass lasered by quarterback Ben Roethlisberger.
- 3
aeronauticsaerospaceaviationTo point a laser at an aircraft, potentially disorienting the pilot or pilots.
lasernoun詞源 2/ˈleɪs.ə(ɹ)/
- 1
A gum resin obtained from certain umbelliferous plants.
- 2
Such a plant.
資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。