When ordering, a customer makes decisions about services he plans to participate in while on the cruise.
在订购时，一个客户会决定在游览期间他计划参与的服务。
Most companies provide redundancy to outside applications such as customer ordering but often neglect to provide the same to internal applications.
大部分公司都在对外应用程序(如客户订购)中提供冗余性，但经常忽略向内部应用程序提供此功能。
For example, when an item order is sent from a front application to the ordering system, an email can also be sent to the customer for confirmation.
例如，在一个项目订单从前端应用发送给订单系统的时候，一封要求确认的电子邮件也可能同时被发送给客户。
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