- 阴沉: cloudy; overcast; gloomy; so ...
- 的: 4次方是 The fourth power of 2 i ...
- 笑声: laugh; laughter
- 低沉的笑声: a fruity chuckle
- 阴沉的: adust; depressing; dismal; doleful; dolesome; drear; gloomy; languid; mirky; murky; sulky; surly; tristful
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