明知故问
- na.knew what the business was, but deliberately asked.
- 网络Captain Obvious; J-Walk; ask while knowing the answer

明知故问
1.(He) knew what the business was, but deliberately asked.; (You) ask (me) as if (you) did not know.; (He) asks, but already knows.; ask not without knowledge of the answer; ask while knowing the answer; knowingly ask the question; feign ignorance and ask questions
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