n.密封；印章；海豹；封条v.密封；盖章；决定；封上（信封） 变形： 复数：seals过去式：sealed过去分词：sealed现在分词：sealing第三人称单数：seals 双语释义：n.(名词)[C] 海豹 animal with flippers that lives near and in the sea and eats fish[C] 印章,印鉴,图章 symbols or words pressed into wax, clay, paper etc. to show that sth i