Traditional: 細
细 (xì) means “thin or slender; finely particulate; thin and soft; fine; delicate; trifling; (of a sound) quiet; frugal”. It is an HSK 4 Chinese character (traditional 細) in the HSK 3.0 vocabulary.
这根线很细。
Zhè gēn xiàn hěn xì.
This thread is very thin.
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