我们什么时候能完成模型汽车的制作？
跟你讲一个小男孩，他自己做了一个模型汽车。
Let me tell you about a young boy who made a model car all on his own.
他们不只是做模型汽车，还要装上机械装置和电池，用摇控器操控汽车呢。
They not only make model cars, but install mechanical devices and batteries, and use a remote control to control the car.
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