说时迟，那时快

shuōshíchí,nàshíkuài

in the twinkling of an eye; in an instant

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shuo1 shi2 chi2 , na4 shi2 kuai4

(idiom) no sooner said than done, before you know it

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說時遲，那時快|说时迟，那时快 [shuō shí chí , nà shí kuài] ► (idiom) no sooner said than done ► before you know it