意思1.延伸、散布。【组词】：繁衍、推衍、衍变
意思2.多余的。【组词】：衍字、衍文
意思3.做事马虎。【组词】：敷衍
adj.：redundant, superfluous; surplus、v.：deduce; expand; derivefrom; spreadout; develop
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