上面的方法本质上是一种间歇训练，其最快和最慢的跑都要在田径场或者一块平整的地面上进行，而跨步跑没有这么多要求，你几乎可以任何时候任何地方进行，它只占用你训练最后的几分钟时间。
You can do them almost anytime, anywhere. They take only a few minutes at the end of a workout.
比赛的第一阶段并不很困难，只是在最后三英里的不平整的山地上才分出高低强弱。
The first part of the race is not really difficult; it's the final three miles over rough and hilly ground that will separate the men from the boys.
建立了施工平整度层间传递模型，并根据平整度分级标准，提出了每层的平整度控制标准，最后建议了沥青路面平整度控制措施。
According to the smoothness grade standard, the smoothness control standard of each layer is presented, and the asphalt pavement smoothness control measure is suggested finally.
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