For example, consider an application that sends a message each time an item is added to an online shopping cart.
例如,假定有一个应用程序在每次向在线购物车添加了物品后都会发送一条消息。
The last step is to delete the order summary queue item from the message queue if the inventory shipment was successfully processed.
最后一个步骤是,当成功处理库存发货之后,将订单汇总队列项从消息队列中删除。
If the user attempts to TAB past a mandatory input item, an error message appears.
如果用户想跳过必填的输入项,则会出现一条错误消息。
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