Set your car to cruise control or try driving at a consistent speed.

把你的车调到巡航控制状态或试着匀速驾驶。

87. The slim pirate was wandering the gulf at a constant pace when he overtook an African jewel and ivory boat with courage and persuaded the sailors to lend him all their navigation tools, gun powder, atlases and scopes.

这位精瘦的海盗在海湾匀速游弋，他勇敢地超越了一艘（载） 珠宝和象牙的非洲船只，并说服船员们将他们的导航工具、火药、地图册和望远镜给他。

So I have a block that is stationary on top of-- let me do the surface in a different color-- on top of some type of surface right over here.

物块静止于表面上 物块静止于表面上 而这里 物块以匀速在相同表面上。

This is a pivotal and exciting point in history, where change is not constant, but exponential and compounding.

这是历史上关键且振奋人心的节点，变革不再是匀速推进，而是指数叠加爆发。

It basically helps the boat float more evenly at all times, making loading at docks and sailing easier.

这有助于货轮始终匀速地漂浮，使码头装货和航行更容易。

So Newton's First Law, you're going to have your constant velocity.

所以，牛顿第一定律 的内容为：任何物体要保持匀速直线。

An object in motion stays in uniform motion unless acted upon by an external force.

一个物体保持匀速，非受到外力作用。

And so this is a graph of an object that has constant velocity.

这是一张表示物体匀速的图表。

You do a warm up, you do some strides, maybe some dynamic stretches, then you just run as hard as you can for 12 minutes, as evenly paced as you can manage.

进行热身，做些加速跑，可能再加入一些态拉伸，然后尽力匀速跑12分钟。

Next, when the acceleration of an object  does not change, when the acceleration remains constant or uniform, we can use these uniformly  accelerated motion equations or UAM equations.

接下来， 当物体的加速度不变时，当加速度保持恒定或匀速时，我们可以使用这些匀速加速方程或UAM方程。

Continuing at a consistent speed until you reach the lane end point, and then zipper merging decreases the number of potentially dangerous lane switches.

保持匀速行驶直至到达车道终点，再进行拉链式并道， 这样可以减少潜在危险的车道变换次数。

So, let’s recall what we know about uniform circular motion, to see what it can tell us about simple harmonic motion.

那么，让我们回顾一下我们对匀速圆周的了解， 看看它能告诉我们什么关于简谐。

And  if you want to keep your speed constant, make your spacing the exact same  as those previous two frames.

如果你想保持匀速，就把间距设置成和前两帧完一样。

When flying along at constant speed, these forces must be perfectly balanced by the tension in the rope.

当匀速飞行时，这些力必须通过绳索的张力完美平衡。

I then asked eighteen blind volunteers to feel the wheels and assign one of the following motions to each wheel: wobbling, spinning fast, spinning steadily, jerking or braking.

之后，我邀请了 18 位盲人志愿者去触摸一下这些轮子（的图画）并且将以下方式指定给每个轮子（的图画）：随意转、快速转、匀速转、颠簸和刹车。

So, let's recall what we know about uniform circular motion, to see what it can tell us about simple harmonic motion.

让我们回忆一下我们对匀速圆周的了解， 让我们看看它可能会告诉我们关于简谐的信息。

Because the cyclist is moving at a constant  speed, we can tell that the force from the pedaling and the force from the friction are  perfectly balanced.

因为自行车手以匀速行驶，我们可以判断出蹬踏产生的力和摩擦力是完平衡的。

You might recognize those terms, because we’ve already talked about them in our episode on uniform circular motion.

您可能认得这些术语， 因为我们已经在匀速圆周一集中讨论过它们。

It's known as uniform circular motion, and it's what occurs when anything moves along a circular path in a consistent way.

它被称为匀速旋转 当物体在圆形路径上匀速时。

And if you want  to stay constant, make it exactly the same.

如果你想保持匀速，就让它完一样。