design development phase

例句：

1. 1.The company's latest product was launched during the design development phase.
   该公司最新产品在设计开发阶段推出。
2. 2. The team worked diligently to complete the design development phase of the project.
   团队努力工作，完成了项目的设计和开发阶段。
3. 3. During the design development phase, they made several adjustments to the original plan.
   在设计和开发阶段，他们对原始计划进行了几次调整。