教练让他摇头，摆动手臂，伸展脖子，弯曲膝盖。

The instructor made him shake his head, swing his arms, stretch his neck and bend his knees.

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海登的右腿上，裤子被卷到膝盖，一块从他爸爸的举重器材上取下来的塑料板，正套在他那超级大拇趾的底端，每隔大约一秒钟的时间，他便上下伸展或弯曲一下他的大拇趾。

His right pant leg was rolled up to the knee, and on the end of his big toe was a plastic weight from his dad's weightlifting set. Every second or so, Hayden flexed his toe up, then down.

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