题目内容
新鲜催化剂的活性高，平衡剂的活性就高。（）
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v. to continue to do sth. despite difficulties or opposition, in a way that can seem unreasonable
n. the time at which something is supposed to begin;
n. the act of allowing sb. to do sth., especially when this is done by sb. in a position of authority
adj. accepting what happens or what people do without trying to change anything or oppose them
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