人家不可能會為你一個人按合同時間收費的，都是按年度算，液氮罐也不可能經常打開的。你就當作雙保險繼續保存吧。

來源: 金筆於 2017-10-07 14:38:23 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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