认真起来；正经；别开玩笑
先理解核心含义，再看它在真实句子里的用法。
认真起来；正经；别开玩笑；认真起来；正经；别开玩笑
to be earnest and sincere, not joking; often used as a command to stop joking
Be serious! This is an important matter.
正经点!这是重要的事情。
认真起来；正经；别开玩笑
to be earnest and sincere, not joking; often used as a command to stop joking
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Dictionary facts from AI_SUPPLEMENT.