好词典

laser

UK /ˈleɪzə(r)/US /ˈleɪzər/

词源

源自首字母缩略词 'Light Amplification by Stimulated Emission of Radiation'(受激辐射光放大)。

noun

❶ 激光,一种通过受激辐射产生的高强度、方向性极强的光束,广泛应用于医疗、工业、通信等领域。

“The doctor used a laser to remove the tumor.”

(医生用激光切除了肿瘤。)

“Laser pointers are often used in presentations.”

(激光笔常用于演示中。)

同义词:light beam, ray, beam

常见短语

laser beam — 激光束,指激光发出的高度集中的光束,常用于科学实验或工业加工。

“The laser beam was directed at the target with precision.”

(激光束被精确地瞄准了目标。)

laser surgery — 激光手术,利用激光进行的外科手术,通常具有创伤小、恢复快的特点。

“She underwent laser surgery to correct her vision.”

(她接受了激光手术来矫正视力。)