Just as I finish ringing up an order, a customer will say, "Oops, I forgot to pick up a fresh loaf of bread".

当我结算完一个订单时，一个顾客会说：“哎呀，我忘记拿一条新鲜的面包了。”

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I am just ringing to check up. Is everything ok with your order?

我就是想打个电话确认一下，您的订单一切正常吗？

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In order to improve the ringing method of telephone used in power systems, a type of selective calling device using audio frequency has been developed.

为了使电力系统通信设备的呼叫装置更加使用方便工作可靠，我们研制了以按键电话机发出双音频呼叫信号进行选择接收的音频选号装置。

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