天色突然暗下來。
The sky suddenly darkened.
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Example sentences
天色漸漸變暗，可能快要下雨了。
天色渐渐变暗，可能快要下雨了。
The sky is gradually turning dark, it might rain soon.
天色已經黑了。
The sky has already become dark.
太陽下山了，天色漸漸暗了下來。
The sun has gone down, and the sky is gradually getting dark.
Usage Notes
Refers to the appearance of the sky, which can indicate the time or weather changes.
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