是骡子是马，牵出来遛遛
lit. to see whether it's a mule or a horse, take it out for a walk (idiom)
Traditional: 是騾子是馬，牽出來遛遛
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📖 Additional Information
English Phonetic:
'idiәm
Detailed Definition:
n. an expression whose meanings cannot be inferred from the meanings of the words that make it up