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For example, we know that if a body is near the surface of the Earth, the force of gravity of that object seems to be m times g, where g is 9.8.
例如,我们知道,如果在地球表面有一个物体,该物体受到的重力大小为 m 与 g 的乘积,g 等于 9.8
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And the idea was that gravity did work on the water and falling, and that work led to the generation of heat.
焦耳的想法是,重力对水，做了功。
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If nothing is touching the body, there are no forces on it, with one exception which is, of course, gravity.
如果没有实体接触,那么它就不受作用力,当然一个例外那就是引力
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The poet, after all, is subject to gravity in Frost, to the force of the earth.
这个诗人，弗罗斯特，终究还是受制于地心引力，受制于地球的力量。
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Imagine waking up every morning and saying to yourself: "I refuse to accept the law of gravity.
想象每天早上醒来后对自己说：,“我拒绝接受万有引力定律。
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She touched the edge of its voluptuous field, knowing it would be lovely beyond dreams, simply to submit to it, that not gravity's pull, laws of ballistics, feral ravening promised more delight.
一个死亡愿望就能达成，她经历过骄奢生活的边缘，知道如果一向它投降，就会有种超越梦境的快乐，野性的掠夺能够带来更多的欢乐。
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They seem to be going somewhere and there's this sort of force of pull or gravity in music having to do with some chords wanting to go to other chords.
和弦向某一个方向发展，就像有一股力量拉着它们,或者说音乐的重力吸引着它们，让一些和弦想行进成为另一些和弦。
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One should do," he says, "what archers do when attempting to reach a distant target, namely, aim your bow high, knowing that the force of gravity " will bring the arrow down."
他说：，“一个人应该做的是，模仿伟人所为,当试图达致遥不可及的目标时，意即将目标设高，明了重力会将,射出的箭吸回地面“
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That is, you minimize potential energy and you see things falling under the force of gravity and so forthgoing to potential energy minima in conformance with this result.
换句话说，你使得势能最小化,然后发现我们关注的东西,在重力或者其他力的作用下下落,直到势能最小的地方,这和我们刚才的结果是一致的。
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It's really amazing that what Newton did in the case of gravity was to find the expression for this.
这一点非常神奇,牛顿在引力方面的研究,只是为了找出这个的表达式
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Gravity is one force that acts on a body without the source of the force actually touching it.
引力是一种受力物体收到了力的作用,但却没有接触施力物体的力
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We all know that in a falling elevator, you definitely do not escape the pull of gravity.
我们都知道在一个下坠的电梯里,你当然还是会受到重力的
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But gravity has a remarkable property that the pull of the Earth is itself proportional to the inertia of the object.
重力有一个显著特征,即地球的引力,与物体的质量成比例
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And the aeronautics engineer who wants to build an airplane has to obey, take into consideration, learn it, study and understand the law of gravity.
航空航天工程师,想制造飞机，必须遵守，加以考虑，学习，研究理解万有引力定律。
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Imagine if an aeronautics engineer : woke up in the morning and said, "you know,the Law of Gravity thing really makes things difficult for me.
试想一下，如果一个航空工程师,在早上醒来，说，“万有引力,真的带给我很多麻烦。
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Now here is the key point: Painful emotions are as much as part of human nature as the law of gravity is part of physical nature.
这是关键点：,人类本性的痛苦情绪,一如物理世界的万有引力定律。
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