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lack做动词的同义词是be lacking in。这是托福巴郎词汇给的同义词。口语点的是be short of。lack可以跟具体名词,比如the necessities of life,更喜欢跟抽象名词,比如confidence ,determination,motivation,the desire to learn,artistic value。be short of 喜欢跟money,cash,funds。@付英东 展开全文原微博