The lights keep flickering.

灯光忽明忽暗.

《现代汉英综合大词典》

The light in my bedroom twinkled, blurred and twinkled again.

我房间的灯变得闪烁不定,忽明忽暗.

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He started to follow the half - glimpsed light, then abruptly caught himself.

他下意识地跟着忽明忽暗的光走去, 然后又突然止住脚步.

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The flickering candle made it difficult for him to read the letter from his girlfriend.

在忽明忽暗的烛光下,他看不清女朋友写来的信.

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