搜腸刮肚

sōuchángguādù

rack one's brains

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sou1 chang2 gua1 du4

to search one's guts and belly (idiom); to racks one's brains for a solution

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搜腸刮肚|搜肠刮肚 [sōu cháng guā dù] ► to search one's guts and belly (idiom); to racks one's brains for a solution