不一定。大盤升得急，就買短期的；慢慢長就買長期的。call買的是加速度，要判斷方向和動力

來源: cat18 於 2024-06-06 11:44:23 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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