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V-ERG
(使)變黑;(使)變深;(使)變暗
If something darkens or if a person or thing darkens it, it becomes darker.
例句
The sky darkened abruptly...
天突然暗了下來。
She had put on her make-up and darkened her eyelashes.
她已化好妝，并涂黑了睫毛。
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V-ERG
(使)變得陰郁;(使)心情沉重
If someone's mood darkens or if something darkens their mood, they suddenly become rather unhappy.
例句
My sunny mood suddenly darkened...
我的好心情突然變得陰郁起來。
Nothing was going to darken his mood today.
今天什么都不會影響到他的心情。
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VERB
(臉色)變陰沉;(面)有慍色
If someone's face darkens, they suddenly look angry.
例句
Rawley's face darkened again.
羅利的臉色又陰沉下來。