切三明治的刀是生是熟？这是脑筋急转弯吗？

来源: snowmom 于 2021-07-29 14:56:12 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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切三明治的 刀是生是熟？ 这是脑筋急转弯吗？