少年老成

shàoniánlǎochéng

an old head on young shoulders; young but mature, an old young man; a young person lacking in vigour and drive

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an old head on young shoulders

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an old head on young shoulders

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少年老成

shào nián lǎo chéng

（年轻老练） an old head on young shoulders; young but prudent and capable; young but experienced; an old fashioned youth

（年轻而缺乏朝气） a young person lacking in vigor and drive

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少年老成|少年老成 [shào nián lǎo chéng] ► accomplished though young ► lacking youthful vigor