每个相继的迭代构建在前面的迭代工作之上，演进并改进系统，直到完成最终的产品。
Each successive iteration builds on the work of previous iterations to evolve and refine the system until the final product is complete.
请进行检查，以确保显示的信息就是您在前面的步骤中所指定的。
Check to make sure that the details shown are what you specified in the previous steps.
请确保您的行李不要堵住过道或出口，您的行李可以放在前面的座位下面，或者头顶的隔间。
Please ensure luggage is not blocking the aisles or exits. Luggage can be placed under the seat in front of you, or in the overhead compartment.
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