| 单词 | missing link |
| 释义 | missing link noun only singular ■something that is necessary to complete a series or solve a problem （一系列相关联事物中）必要的环节 •Those documents provided the missing link, and the police were able to make an arrest soon after they discovered them.这些档提供了必要的证据，警方发现档之后很快就展开了逮捕行动。 the missing link ■an animal which no longer exists or might never have existed and is thought to explain how humans developed from animals similar to monkeys 缺环（人们推想中存在于类人猿和人类之间的过渡动物） |
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