一旦此调用针对当前时间步长返回，就可以清空上一步长施加到这些物体上的力，然后获得动态物体的当前方位和角度。

Once the call returns for the current time step, you clear the forces applied to the objects from the last step, and then get the current position and Angle of your dynamic body.

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这里包装器方法只是保存当前时间，然后调用改名后的原方法，并在返回调用原方法的结果之前打印时间报告。

Here the wrapper method just saves the current time, then calls the renamed original method and prints a time report before returning the result of the call to the original method.

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将批量生产的产品的名称或 ID 作为输入，并返回其当前制造时间表。

Take the name or ID of a bulk-production item as input and return its current manufacturing schedule.

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