請幫我看看這是什麽意思

來源: 於 2010-10-02 23:49:27 [舊帖] [給我悄悄話] 本文已被閱讀：次

Note: USPS® Insurance, available at Post OfficeTM locations, provides coverage up to $5000.00 USD. Insurance purchased online cannot be combined with insurance purchased at a Post OfficeTM. Terms and Conditions

我通過Paypal 打標簽寄東西，可是不知道從網上買的保險是不是管用。本來E文就不靈光。這個"combined"把我弄暈了。它想表達什麽意思啊？謝謝