But come what may, changing direction means losing speed.

但接下来的问题是改变方向意味着减速。

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It was shown flying at a speed of slightly over 6000 mph, and rapidly changing direction in the early morning sky, it is claimed.

其飞行速度略高于6000英里/小时，并且猛然改变方向冲上清晨的天空中。

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Its infra-red sensors enable it to slow down before nudging up to an obstacle—such as a dozy cat—changing direction and setting off again.

它内置的红外线感应器能使它在撞到物体——比如，一只慵懒困倦的猫——之前停下来，然后换个方向，继续前进。

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You will learn in 8.02 that if you have a charged body changing direction, that constitutes an acceleration.

你们将在8。02中学到,如果一个带电体改变方向时，产生一个加速度。

麻省理工公开课 - 固态化学导论课程节选

Try it again. So, sure enough, changing the bias changed the price, and even changed it in the right direction.

我们再来运行一下，好了，很明显，这个偏向值改变了价格，而且方向也是对的。

麻省理工公开课 - 计算机科学及编程导论课程节选

It comes from the fact that velocity is a vector and you can change your velocity vector by changing your direction.

其原理就是,速度是矢量,你可以通过改变方向来改变速度

耶鲁公开课 - 基础物理课程节选

Then he might spring four feet in the air, changing direction in flight like a bovine Michael Jordan.

WSJ: This Ain't No Bull: Nary a Cowboy Can Ride 'Em These Days

On Friday, the Dow Jones Industrial Average moved over 1000 points, changing direction 18 times in the last trading hour alone.

FORBES: Briefing Book: A. Michael Lipper

Douglas again did well in 37 minutes, this time to cope with a deflection from David Dunn's shot, changing direction to clutch the ball safely.

BBC: Celtic win Battle of Britain