实验室超出了地球引力的范围。
火星引力大约只有地球引力的八分之三。
The gravity on Mars is only about three-eighths of that on Earth.
这是地球引力的固定部分。
实际上，月球的引力只有地球引力的六分之一。
In fact, the moon's gravitational force is only one-sixth that of the Earth.
这样，只要我们在任何时候打开房间内浴缸或的淋浴喷头的热水出水阀，热水器的水箱就能在地球引力的作用下自动添水。
Then, whenever you open a hot water valve in your house, such as a sink or shower, then it will gravity feed.
是为了让火箭的速度足够快，足以逃离地球的引力。
It is to get the rocket going fast enough to escape Earth's gravity.
苹果上在这个方向上,受地球的引力影响。
There's a force from the earth onto the apple and this is that force.
地心引力施加一个垂直向下，指向地球中心的自然拉力。
Gravity exerts a natural pull straight downwards, towards the centre of the earth.
地心引力施加一个垂直向下，指向地球中心的自然拉力。
Gravity exerts a natural pull straight downwards, towards the center of the earth.
这是因为我们离开了来自地球的地心引力的拉力。
It's because we leave the pull of gravity that comes from the earth.
我的肌肉已经习惯了地球万有引力。
地球的自转角度能够保持不变，完全是因为有了月球的引力拉动。
The Angle of earth's spin is constant only because the moon's gravitational pull.
姑且地球的引力已经够大的了，设想一下太阳的引力该有多大。
And if the earth's gravity seems strong, imagine the pull of the sun.
地球的磁引力正在改变，至爱的人类。
很清楚地球是有引力的。
在地球引力下，重量和质量是等值的，但是度量单位不同。
In the Earth's gravity, weight and is equivalent in quality, but different metric units.
地球有那堋多的物质，引力就很大了，这也是我们站在地面不会飞出太空的原因。
The earth has that much material, gravity is great, this is also our feet on the ground can not fly out space cause.
说那个地球的吸引力问题，“万有引力”也是错误的。
Such as that the gravitational pull of the earth, "gravity" is wrong.
她并不是地球上唯一的女人，没有必要是最具吸引力的或充满母性的。
She was not the only woman on earth, not necessarily the most attractive or maternal.
要是没有引力，地球上的东西会飞到天上去。
无论你走到地球的什么地方，你都会感觉到地引力。
No matter where you go on the earth, you will feel the gravity.
地球引力和这些年的坏习惯总使我站不直。
将沉重的航天器和燃料送出地球引力以外费用昂贵。
Lifting heavy spacecraft and fuel out of the Earth's gravity is expensive.
月球的引力比地球上的引力小得多。
The force of gravity on the moon is much less than on the earth .
月亮的引力大约为地球的六分之一。
月亮的引力大约为地球的六分之一。
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