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词汇 whiten
词源

whiten v.

c. 1300, "to make white," from white (adj.) + -en (1). Intransitive sense "become white" is from 1630s. Earlier verb was simply white (late Old English). Related: Whitened; whitening; whitener.

updated on April 01, 2014

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更新时间:2025/5/2 4:59:53