| 单词 | 购买凭证 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔documentation〕Keep your receipts as documentation of your purchases.保管好发票，作为购买凭证。韦氏高阶〔proof〕Proof of purchase must be provided before a refund can be made.退款前必须提供购买凭证。牛津搭配We may refuse a refund if you do not have a receipt or other proof of purchase.如果你没有收据或其他的购买凭证，我们可以拒绝退款。牛津商务 |
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