似懂非懂

si4 dong3 fei1 dong3

to seem to understand, but not to understand (idiom)

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似懂非懂

sì dǒng fēi dǒng

not fully understand; have only a hazy notion; knowing a subject (lesson) half well

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似懂非懂|似懂非懂 [sì dǒng fēi dǒng] ► to seem to understand, but not to understand (idiom)