gǒu dǎi lǎo shǔ
lit. a dog who catches mice (idiom)
fig. to be meddlesome
狗
gǒu
dog
逮
dǎi
(coll.) to catch; to seize; to capture
老
lǎo
prefix used before the surname of a person or a numeral indicating the order of birth of the children in a family or to indicate affection or familiarity
鼠
shǔ
(bound form) rat; mouse
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