blue light(短语)指“蓝色的光”。常见用法包括:
/ˈbluː laɪt/
The room was filled with blue light.
房间里充满了蓝色的光。
After staring at the blue light from his phone late at night, he found it harder to fall asleep.
深夜盯着手机发出的蓝光看了很久后,他发现更难入睡了。
blue 源自古法语 bleu(蓝色),light 源自古英语 lēoht(光、亮)。两者组合成 blue light,字面义就是“蓝色的光”。随着现代技术与社会场景发展,这一短语又扩展出“屏幕蓝光”“警示灯蓝光”等更具体的常用含义。