Gravity is an attractive force between any two masses.

重力是任何两个物体之间引力。

And there's attractive forces between the water molecules holding the drop together.

同时还有水分子之间将水滴保持一引力。

In general, we can define gravity as an attractive force that pulls two bodies together.

一般来说，我们可以将重力定义为将两个物体拉一引力。

Gravity is the attractive force between two objects with mass— any two objects with mass.

重力是两个有质量物体之间引力— —任何两个有质量物体。

Gravity is an attractive force, so objects with mass want to move towards the surface of the Earth.

重力是一种引力，因此具有质量物体想要向地球面移动。

We said they are attractive forces, and that they exist between all objects with mass.

我们说它们是引力，它们存于所有有质量物体之间。

So, it generates a huge attractive force.

所以，它产生了巨大引力。

Now, if you increase the number of carbons, you're going to increase the number of attractive forces that are possible.

，如果你增加碳数量，你就会增加可能存引力数量。

And so the ball is in the field of gravity for Earth and experiences an attractive gravitational force.

因此，球处于地球引力场中，并受到引力引。

For really tiny animals, all they need to do is take advantage of water's strong surface tension, an attractive force between molecules on a liquid.

对于非常小动物来说， 它们所需要做就是利用水强大面张力，即液体分子之间引力。

Well, one of the four fundamental forces of physics is the strong nuclear force, an attractive force that acts between protons and neutrons in a nucleus.

好吧，物理四种基本力之一是强核力，这是一种作用原子核中质子和中子之间引力。

If you have, then you have experienced the effect of surface tension, an attractive force created by chemical bonds between water molecules at a water's surface.

如果有，您就已经体验到了面张力作用，面张力是由水面水分子之间化键形成引力。

And the decrease in radius from  left to right is due to the attractive force between the protons in the nucleus and the  electrons in the shells.

而半径从左到右减小是由于原子核中质子和壳层中电子之间引力造成。

So in order to have the sock and the shirt attracted to each other they must have opposite net charges because they're experiencing an attractive electric force.

因此，为了使袜子和衬衫相互引，它们必须具有相反净电荷，因为它们正经历引力电力。

In this case, the ball is in Earth's gravitational field, and so it feels an attractive force towards the Earth and the ball falls to the ground.

这种情况下，球处于地球引力场中，因此它感受到了朝向地球引力，并且球落到了地面上。

You can walk on solid ground like dirt, wood, or concrete because the attractive forces between the molecules are strong enough to hold all of them in place.

你可以泥土、木头或混凝土等坚固地面上行走， 因为分子之间引力足以将它们固定适当位置。

As the human meteoroid approached the sun or centre of attractive force, the attraction of one century squared itself to give the measure of attraction in the next.

当人类流星体接近太阳或引力中心时， 一个世纪引力将自身平方以得出下一个世纪引力。

When a voltage is applied across two beamlike electrodes made of aluminium, which are separated by a gap of around 50 nanometres, charge builds up on each, creating an attractive force between them, until a critical point is reached.

两个柱状铝电极间隔约50纳米，当电压加这两个电极之间时，它们就会相互通电，二者之间会形成一股引力，直至达到一个临界点。

Motion is the ultimate object of science, and measures of motion are many; but with thought as with matter, the true measure is mass in its astronomic sense — the sum or difference of attractive forces.

运动是科最终对象，运动量度有很多种；但是思想和物质一样，真正衡量标准是天文意义上质量——引力总和或差异。

Man commonly begs the question again taking for granted that he captures the forces. A dynamic theory, assigning attractive force to opposing bodies in proportion to the law of mass, takes for granted that the forces of nature capture man.

人们通常会再次回避这个问题，认为他获得了力是理所当然。一种动力理论，根据质量定律将引力分配给相对物体，理所当然地认为自然力会引人。