____: n. the place where sth. begins, where it springs into being 出身,血统;起源
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____: v. end (an agreement or arrangement that you have with sb.) 取消,废除
____: n. a legal agreement 合同;契约
____: produce a baby or young animal 生孩子;产仔
____: offer (sth.) for public inspection, sale, etc. 拿出;推出;发表