A tangent is a straight line that just touches a curve, so the concept of "running the tangents" is to run the shortest distance possible by running straight from one curve to the next.

切线是一条直线，刚好接触到曲线，所以跑切线是从一个弯道跑到另一个最短的距离。

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Topline: From the neck running slightly downwards to the Withers in a harmonious line, then running on straight and level.

背线：自脖颈至肩部，微微向下，线条柔和，向后保持水平直线。

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The reason of deviation phenomena in the course of gear shift is analyzed when the tracked vehicle is running straight-line.

针对该履带车辆在直线行驶换挡过程中发生偏驶的现象，分析了产生偏驶现象的原因。

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When captain Steve Borthwick was caught offside running straight through a line-out, Giteau duly doubled the visitors' lead.

BBC: England 14-28 Australia