我用手電筒往下看，所有部件都是鏽的，所以猜測是不是有的部件生鏽了？倒油會不會讓這些部件潤滑起來？謝謝。

來源: summerfly 於 2023-07-06 14:27:15 [舊帖] [給我悄悄話] 本文已被閱讀：次

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