smart aleck        
[das] 自。闲。厚颜孩。假装博。
know-it-all, smart aleck

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[der] 自：宣道而别建议见。假装博。
know-it-all, smart aleck

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[der] 自：宣道而别建议见。假装博。
smart arse, know-it-all, smart aleck

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[der] （骂话）尾巴鹰，“什都道”
smart arse, know-it-all, smart aleck

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[der] 鬼 = Schlauberger

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[der] 鬼。= Schlauberger

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[der] 鬼。自聪。
clever dick, smart aleck, aleck, smarty pants