discolorationn.
英 ,dɪskʌlə'reɪʃn | 美 ,dɪs,kʌlə'reʃən
中文n. 变色；污点
词根词源
discoloration (n.)1640s, noun of action from discolorate (early 15c.), from past participle stem of Medieval Latin discolorare (see discolor) + -ation.
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