Portland, Ore. , consultant Mike M. says he uses location services to track people more than to meet them.
俄勒冈州波特兰的顾问麦克（Mike M）表示他使用定位服务是为了追踪别人而不是和他们见面。
And I'm going to slide down m that track an object mass m, and I'm going to evaluate the oscillation along a perfect circular track.
我准备在轨道上滑下，物体，我要求出，绕轨道一周的，震荡时间。
At the junction of Tampines Avenue 7 and Avenue 9, is a 7-km mountain biking trail and a 300-m long BMX track at the.
淡宾尼大道7和9的交界处有一个7公里的山地自行车道和一个300米长的小轮车赛道。
The numerical results show that the errors in radius and across-track are less than 0.1 m, and that in along-track less than 1 m.
数值结果表明：用本方法测轨，向径、垂迹方向误差小于0.1米，沿迹方向误差小于1米。
Or in the foam concrete cover with a 0.05 m thick porous asphalt layer and plastic layer, then can make the track and field with the runway.
或者在泡沫混凝土上盖上一层0.05m厚的多孔沥青层及塑料层，则可作田径跑道用。
A typical outdoor track is a400 m oval.
通常的室内田径场是一个400米长的椭圆。
A typical outdoor track is a400 m oval.
通常的室内田径场是一个400米长的椭圆。
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