这个方法好处是降低投资风险，缺点是升高了可能永远买不到低价而失去投资机会的风险，所以世界上没有免费的午餐。

来源: parentb 于 2026-03-13 05:31:22 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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