在确定最终选择之前，父母们需要签字，以确认他们孩子的选择。
Before choices are finalized, parents will be asked to sign to confirm their child's choices.
此任务确保我们确认拥有什么资产(包括服务)并确定哪些资产可以进入下一个阶段。
The task makes sure we confirm what we have and determine which assets, including services, can be carried forward to the next stage.
做为一个设计特色，消息确认使得客户端能够确定请求信息是否丢失。
The design feature enabling the client to determine whether the request message got lost is the acknowledgement message.
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