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名词laser(激光)也是可数名词吗

来源:www.sumaizhan.com 2023-08-26

The operation on his eye was done with a laser. 用激光对他的双眼做了手术。
句子中的 laser 前用了不定冠词,难道 laser 也是可数名词吗?

这里的 laser 指“激光器”“激光机”,确实是可数名词。
其实 laser 是一个 acronym(首字母缩略词),由 light amplification bystimulated emission of radiation 的首字母缩略而成。它有两个主要意思:
意思1、表示“激光”,是可数名词,“柯林斯英语词典”对此的讲解是:Alaser is a narrow beam of concentrated light produced by a special machine. Itis used for cutting very hard materials, and in many technical fields such assurgery and telecommunications. 可见laser 不是指“激光”这种物质,而是指“一束一束的激光”,故它是可数的,复数形式的 laser 则指“多束激光”。如:
a vast backdrop with the colourful logo highlighted with lasers.彩色标语被激光突出的巨幅背景幕布。
另外,laser 还一般用于名词前作定语。如:
Laser printers give high qualityprint. 激光打印机的打印水平非常不错。
This new gun shoots a laser beam at the target. 这支新枪会向目的射出激光束。
They blazed a trail in the field of laser surgery. 他们在激光外科手术范围中发展新路。
意思2、表示“激光器”“激光设施”,也是可数名词,“柯林斯英语词典”对此的讲解是:A laser is a machine that produces a laser beam. 如:
The cancer cells are destroyed by a tiny laser. 癌细胞被一个微型激光器杀去世了。
If you don’t have a hand, they can build a laser into yourforearm. You’ll be as good as new. 假如你缺了一只手,他们可以在你的前臂上装上一支激光器。那你就像有了一只小白。
Professor Orr has developed interesting ways of tagging chemicalmolecules using existing laboratory lasers. 奥尔教授创造了用现有实验室激光设施给化学分子做记号的种种有趣的方法。

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