如果 SPY 下跌接近 25-40%，低於 200 日移動平均線. 如果你有一筆閑錢. 一次投入的效果會好些.

來源: JS_Greenwich 於 2023-07-13 13:48:49 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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