请帮我看看这是什么意思

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

我通过Paypal 打标签寄东西，可是不知道从网上买的保险是不是管用。本来E文就不灵光。这个"combined"把我弄晕了。它想表达什么意思啊？谢谢

所有跟帖： 

• 回复： -star-night- ♂ (99 bytes) () 10/03/2010 postreply 06:53:38

• 回复：回复：谢谢你老兄 -小本生意- ♂ (0 bytes) () 10/07/2010 postreply 17:44:55