为什么一定要卖掉？不能用期权做保护吗？最基本的，卖靠或者买葡萄？或者做个熊葡萄死不来？

来源: hhtt 于 2025-08-14 14:06:59 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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