1.Although these Web sites charge a small fee, keeping cards for an extended period of time increases the chance they'll go unredeemed.
虽然这种网站可能会收取一点费用，用来延长这些礼品券的使用期限。
2.True drunkenness and its aftermath are unredeemed horror, both physical and mental.
真的醉酒及其后果都可怕得无法挽回，在生理上和心理上都是。