A breathing position which minimizes the up and down movement of the head and maintains a proper body line.

呼吸时头部的上下起伏要控制在最小幅度，同时要保持呼吸前的体线不变。

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Three is to see, see stone and stone body line of color, color depends on the individual's preferences, as long as each color is natural on it.

三是看，看石与石体线条的颜色，颜色方面主要取决于个人的喜好，只要每个颜色是自然的就可以了。

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And on your non-breathing stroke, despite the undulation of the rest of your body, it is important trying to keep your head inline with your body line.

在非换气的划臂周期，虽然身体的其他部位在波动，但是头部应当保持与身体成直线的位置。

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One way to say it is, every body will continue to remain in a state of rest or uniform motion in a straight line.

另外一种说法是,任何物体都会继续保持静止,或匀速直线运动的状态

耶鲁公开课 - 基础物理课程节选

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But Danny Gabbidon epitomised Wales' determination as he put his body on the line once again to block Podolski's goal-bound effort.

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O'Driscoll, who will captain Ireland for the 63rd time on Saturday, has repeatedly put his body on the line in his country's cause.

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