前車之覆,後車之鑒 [ㄑㄧㄢˊ ㄔㄜ ㄓ ㄈㄨˋ , ㄏㄡˋ ㄔㄜ ㄓ ㄐㄧㄢˋ; qian2 che1 zhi1 fu4 , hou4 che1 zhi1 jian4]
lit. the cart in front overturns, a warning to the following cart (idiom); fig. draw lesson from the failure of one's predecessor
learn from past mistake
once bitten twice shy
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