大跌時，它加倍損耗也是個優點。這樣以加倍便宜的價格買入。比如說qqq打折20%，它打折60% :D

來源: gladys 於 2025-07-14 06:43:57 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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