A quick demonstration testified to its efficiency in moving heavy objects.

随后人们对它搬运重物的功能进行了简短的测试。

D) They reacted quickly to moving objects.

D） 他们对移动的物体反应迅速。

They're able to identify moving objects.

它们能够识别移动的物体。

A force changes the motion of a moving object.

力改变移动对象的运动。

In 2000, this was the largest moving object on the planet.

在2000年，这是 这个星球上最大的移动物体。

Then they exposed each duckling to two entirely new pairs of moving objects.

然后，他们让每只鸭崽接触两组全新的移动物体。

For instance, one patient had trouble keeping his eyes fixed on moving objects.

例如，一个病人的眼睛很难盯着移动的物体。

First, they took 1-day-old ducklings and exposed them to a pair of moving objects.

首先，他们把一天大的小鸭子暴露在一对移动的物体下。

This means that moving objects, like a clock on a rocket, run a little bit slow.

这意味着移动的物体就像火箭上的时钟，会运行得有点慢。

When she sets sail in 1912, it's the largest moving man-made object on the planet, an unsinkable ship.

当她 1912 年起航时，是地球上最大的移动人造物体，一艘永不沉没的船。

Just then I saw the captain's weapon spring to his shoulder and track a moving object through the bushes.

这时候，我看见船长的枪急急顶在肩上，对着丛林间一个正在走动的东西瞄准。

And secondly, the length of a moving object as measured by an observer at rest will contract by the same factor.

其次，观察者在静止状态下测量的移动物体的长度将收缩相同的因子。

A small panoramic screen in front of it displays moving objects, causing the fly to avoid them by moving its feet.

而它前面的一个小全景屏幕显示移动着的物体, 而苍蝇就需要通过移动避开它们。

Other forces act on moving objects, as well, like friction and air resistance, counteracting gravity, making this acceleration hard to see.

当然也有其他的力作用在移动的物体上，如摩擦力和空气阻力，它们抵消了部分引力，使这种加速度很难被察觉。

Faster moving objects actually do blink across the screen.

- 移动速度更快的物体实际上会在屏幕上闪烁。

Apply that to a spectrum, and by measuring that shift we can tell if an object is moving toward or away from us.

把它应用到光谱上，通过测量这个位移，我们就可以知道一个物体是在靠近我们还是在远离我们。

Well, quite simply, he has a " speed gun" , which, when pointed at a moving object, gives an accurate estimate of its speed.

很简单，他有一个“测速枪”，当指向一个移动的物体时，就能准确地估计出它的速度。

That works fine as long as an object is moving slowly but speed things up images start to blur.

只要物体移动缓慢但加快速度图像开始模糊，这就可以正常工作。

Radar is a device that sends out radio waves for finding the position and speed of a moving object such as a spy plane.

雷达是一种发射出无线电波以对目标（如侦察机）进行定位和测速的装置。

NASA, however is currently set to launch another space probe just next year in 2018 that will become the fastest moving object humanity has ever created.

然而，美国国家航空航天局目前正计划在 2018 年发射另一个太空探测器，它将成为人类有史以来移动速度最快的物体。