What makes it so hard is that you reverse direction on takeoff.

这种跳的难点在于你起跳时要调转方向。

In New Brunwick, you can see a waterfall that reverses direction twice a day.

在新布鲁维克省你可以见到一个瀑布，它每天调换两次方向。

What happens is the Sun reverses the direction of its magnetic field every eleven years.

正在发生的是，太阳每11年改变一下它的磁场的方向。

Because of seasonal changes, it was decided that this new attempt would be done in the reverse direction.

由于季节的变化，决定这次新的尝试将在相反的方向上进行。

All of this made me wonder: What could happen if we could reverse the direction of water's meniscus?

如果我们可以反转水的弯月面的方向，那么会发生什么？

When they collide, they immediately reverse directions.

当它们相撞时，它们会立即反转方向。

Just use the pull chain or the switch on the side of your unit to reverse the fan's direction to clockwise.

只需用拉环或本机侧面的开关将风扇的方向调为顺时针。

Well, there's a window and it's turning, except it stops and reverses direction.

嗯，有一扇窗户，它正在转动，只是它停下来并反转方向。

And that is that there's actually a continuity, but it goes in the reverse direction.

莫莉：这实际上是一种连续性，但它是朝着相反的方向发展的。

We believe he intended to reverse direction

我们相信他打算改口指证被告。

This process of stretching or squishing, or sometimes reversing the direction of a vector is called scaling.

这种拉伸或挤压的过程 或者有时扭转矢量的方向 称为缩放。

The laws of physics, therefore, must change if one reverses the direction of time—they do not obey the symmetry T.

因此，如果时间方向颠倒，物理定律就必须改变——它们不服从对称性 T。

The vesicoureteral orifice is the one-way valve that allows urine to flow from each ureter into the bladder, but not in the reverse direction.

膀胱输尿管口是一个单向通道，允许尿液从每个输尿管进入膀胱，但不可逆流。

One of the earliest hypotheses was that Venus may have been hit so hard by an asteroid that it reversed direction.

最早的假设之一是金星可能受到小行星的猛烈撞击，以至于它改变了方向。

The impulses then REVERSE the direction spreading to the right ventricle, hence a subsequent negative wave in V6, positive in V1.

然后，这些脉冲反向传播到右心室，因此在V6导联随后出现负波，在V1导联出现正波。

The roll of paper had barely uttered these words when she reversed direction and began travelling up instead of down, towards the hole in the ceiling.

那卷纸还没来得及说完这些话，它就改变了方向，开始向上，而不是向下，朝天花板上的洞走去。

Two decades later, Mr Bernanke's doctrine is facing a stiff test in the reverse direction—as a framework for dealing with frazzled, not frothy, markets.

二十年后，伯南克的学说面临着相反方向的严峻考验——作为应对疲惫不堪而非泡沫市场的框架。

As the blood flows in the reverse direction, the murmur is best heard not in the aortic area, but rather along the left sternal border.

当血液流向相反方向流动时，杂音最响部位不是在主动脉区域，而是沿着左胸骨缘。