The items in the shopping cart may need to be processed together, perhaps to aggregate them into a single order message.

购物车中的物品可能需要一起处理，或许要将其聚合到单个订单消息中。

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The method also returns the Cart, so that the client code can update the Cart contents and receive its new state in a single operation.

方法还返回Cart，这样客户代码在一个操作中就能更新Cart的内容并接收购物车的新状态。

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They rushed forwards. The devotion of a single man had given force and courage to all. The cart was raised by twenty arms. Old Fauchelevent was saved.

大家涌上去。一个人的努力带动了所有的人的力气和勇敢。那辆车子竟被二十条胳膊抬了起来。割风老头得免于难。

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To make it easier to do it right, some ICUs now gather all the equipment needed on a single cart ahead of time and give nurses permission to halt a central line procedure if they see a doctor doing it wrong.

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