复数： vouchers

I must know his voucher .

我必须认识他的保证人。

In the sleeping cars the conductor will collect your ticket and give you a voucher .

在卧铺车厢，列车员会收走你的车票并给你一张凭证。

To the old he harps on about his commitment to preserving medicare in its present form , rather than adopting the sort of voucher scheme mr romney proposes .

对老人，他反复强调将继续保存现有的医疗形式，而不是罗姆尼提的凭证计划。

Fedex office stores also serve as drop-off locations for products that will be shipped off for recycling : hp and compaq products can be shipped using a free pre-printed voucher found at hp . Com / recycling , but shipping vouchers for other brands of consumer products will cost $ 10 to $ 25 .

联邦快递（fedex）门店也提供接收和寄送废旧物品的服务：对于惠普和康柏（compaq）产品，消费者可从hp.com/recycling下载预制的免费寄送单据，但对于其它品牌的消费类产品，消费者需支付10-25美元的寄送费用。