光线过暗
The light is too dim
以上为机器翻译结果，长、整句建议使用 人工翻译 。
避开杂乱的背景，或光线过亮或过暗的色块。
Avoid backgrounds that are too busy or have very light or dark patches of colour.
youdao
电脑室内光线要适宜，不可过亮或过暗，避免光线直接照射在荧光屏上而产生干扰光线。
Computer room light should be fit, not too bright or too dark, to avoid direct exposure to light in the screen caused interference of light.
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