熟 (shú) means “ripe; mature; thoroughly cooked; done; familiar; acquainted; experienced; skilled; (of sleep etc) deep; profound; also pr. [shóu]”. It is an HSK 2 Chinese character in the HSK 3.0 vocabulary.
这个苹果熟了。
Zhège píngguǒ shú le.
This apple is ripe.
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