| 1 | So up top, the function prototype. | |
| 2 | Another one is around the development of prototyping. | |
| 3 | How do you test the prototype of the vending machine? | |
| 4 | Metal-wheeled chariots are the prototype of the tanks of modern warfare. | |
| 5 | The company showed the prototype of the new model at the exhibition. |
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