题目内容
adj. (of a child or young person) behaving in a sensible way, like an adult
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v. to change sth. slightly, especially in order to make it more suitable for a particular purpose;
n. the study of the nature and meaning of the universe and of human life
adj. happening or done sometimes but not often
v. to treat sb. in a cruel and unfair way, especially by not giving them the same freedom, rights, etc.. as other people
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