这样的话，成本几乎为零。对下保护少。我本以为朝下定个更低的价位，成本也低一点。

来源: 桃花源里人家于 2025-05-26 20:51:24 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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