题目内容
n. a substance that is used to change the colour of things such as cloth or hair
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n. something that causes problems and tends to stop sb./sth. from succeeding or making progress; a factor which makes someone or something less useful, acceptable, or successful than other people or things.
v.to change your appearance so that people cannot recognize you;
v.to take control of a country or city and its people by force; to defeat sb., especially in a competition, race, etc.
v.to be worthy of
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