混為一談

hùnwéiyìtán

lump (or jumble) together; confuse something with something else

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hun4 wei2 yi1 tan2

to confuse one thing with another (idiom); to muddle

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混為一談|混为一谈 [hùn wéi yī tán] ► to confuse one thing with another (idiom); to muddle