coin: COIN ＝counterinsurgency.n.1.硬币；〔俚语〕金钱。2.〔古语〕＝ coign. 短语和例子a base coin 劣币。a false coin 伪币；赝品。 a silver coin银币。 a small coin小钱。 a subsidiary coin辅币。 pay (sb.) (back) in his own coin 以其人之道还治其
certificate: n.1.证明书；执照，凭照；(毕业)文凭。2.证券，单据。3.明证。短语和例子be married by certificate不依据宗教仪式结婚。 a health certificate健康证明书。 a leaving certificate 毕业[肄业；离职]证书。 a medical certificate诊断书。 a gold certificate〔美国〕金库券
