凭证英文是voucher。可以用这几个例句来解释。treasury fund payment voucher库款支付凭证A share certificate signed and issued by the company is evidence that the share is held by the shareholder.股票是公司签发的证明股东所持股份的凭证。He took my dreadful exhibition of receipts, he put on his glasses, he took his pen, and presto! —I was a pauper!他接过了那些琳琅满目的、为数惊人的收入凭证,戴上眼镜,提起了笔,接着,一眨眼工夫!——我已经变成了一个穷光蛋!Certificate of Insurance保险凭证Confined space permit to work狭窄场所,凭证入内Book of original documents for payments支出凭证簿She has a voucher for a free swim.她有一张免费游泳的凭证。A company that vouchers employees when the payroll cannot Be met.公司在发不出工资时给职员一定的凭证An insurance certificate has the same effect as an insurance policy.保险凭证与保险单具有同样的效力。