v.缺乏，缺少( lack的过去式和过去分词 )； 双语释义：v.(动词)vt. 缺少;缺乏 be not enough;have less or littlen.(名词)[S][U]缺乏,不足,没有 the state of not having enough of sth英英释义： lackn.the state of needing something that is absent or unavailable"there is a serious lack of insight into the