1. The receipt is your proof of purchase.
    这张发票是你购物的凭据.

2. And by measuring the time interval between the taps and the receipt of the echoes, the depth of the sea at that point can be calculated.
    测出回声间隔的时间，便可算出该处海洋的深度。

3. Ask him to give you a receipt when you pay the bill.
    你付帐单时向他要一张收据.

4. "Well, you'd better have a receipt for it, by God.
    "那么，你最好要张收据，真的，

5. For the first time, the customer can see the transaction recorded — and gets a receipt on which every item he or she has picked out is printed by brand name, its price, even the time of purchase.
    顾客首次看到所购物品被登录——还能拿到一张收据，收据上明细地列出他所买商品的商标、价格，就连购买时间也列出。

6. For shoppers, one of the principal advantages of the computer-assisted system is the detailed receipt that they receive.
    这种电脑辅助的收款方式给顾客带来的最大便利之一就是他们能拿来到一张很详细的收据。