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concede vt. 勉强，承认，退让vi. 让步
例句：The candidate conceded that he had lost the national election.
这位候选人承认他已经在全国竞选中失败。
concession n. 让步
例句：Donald said that he could not make concession which is outside theregulation.
唐纳德不能作出越规的让步。
precede v. 领先(于)，在……之前，先于
例句：Edward preceded his speech with a few words of welcome the specialguests.
爱德华在演讲之前先说了几句对特邀来宾表示欢迎的话。
predecessor n. 前辈，前任，(被取代的)原有事物
例句：He is working hard to learn from his predecessors.
他正努力向他的前辈学习。
preceding adj. 在前的，前述的
例句：Bob highly appreciate the preceding man' s precious preciseexercise.
鲍伯高度欣赏前面那个人可贵的精确演练。