魯鈍

lǔdùn

dull-witted; obtuse; stupid

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lǔ dùn

n. moronity, moronism, amentia, feeble mindedness, imbecility, oligophrenia

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lu3 dun4

stupid, slow on the uptake

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魯鈍|鲁钝 [lǔ dùn] ► stupid ► slow on the uptake