光线
word B2- light ray
- light
- illumination
- lighting (for a photograph)
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值得注意的是，人体内有一个“生物钟”，它根据光线的变化，调节我们何时感到困倦。
屏幕发出的光线不仅刺眼，还会让近视的发展速度变得更快。
大自然的明亮光线，就像是眼睛的天然保护伞。
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