prototype flying phase

例句：

1. 1.The new car has a prototype in the showroom.
   新车在展厅里有原型。
2. 2.The software engineers worked on building the prototype.
   软件工程师们致力于构建原型。
3. 3.This prototype will be tested before the final version is released.
   这个原型将在最终版本发布前进行测试。