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It was impossible-- doctors and scientists showed, runners, athletes, the top-ones in the world proved that the doctors were right.
那是不可能的，医生和科学家证明了，跑手，运动员，世上顶尖选手证明了医生们是对的。
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when other people that might not have been involved with the sport wouldn't really know what to do.
而或许没参与过这项运动的人连做什么都不知道。
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That is why we don't worry about the motion of the nucleus 1 because the ratio of mass is about 2,000 to one.
这就解释了为什么我们不担心,原子核运动起来,因为原子核和电子的质量比约为2000：
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It's very clear you don't need a force if something is doing nothing, just sitting there.
显而易见,如果物体没有运动,只是静止状态,那是不需要力的
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Conservativism--deep organic forms of Conservativism is not antithetical to the Enlightenment, at least not entirely.
保守主义者是保守主义的有机形式,和启蒙运动并不对立,至少不完全是
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And this was largely a secular, a less religious movement that focused on the Palestinian identity, nationalizing the conflict, making it national.
这是个非宗教，宗教因素不那么重要的运动,主要集中在于寻求巴勒斯坦身份，把冲突推向国家性质。
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No, I don't have enough time to exercise.
我一向来都不运动，因为我没有足够的时间。
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In kinematics, you don't ask the reason behind anything.
在运动学中,我们不关心现象背后的原因
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The great discovery that Galileo and Newton made is that you don't need a force for a body to move at constant velocity.
伽利略和牛顿的伟大发现就是,物体不需要力来维持匀速运动
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That also cannot happen, so they're moving with the same acceleration.
这也不可能发生,所以它们以相同的加速度运动
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It looks like a tautology because you're never able to show me something that moves forever at a constant velocity, because every time you don't find such a thing, I give an excuse, namely, a force is acting.
这听上去像个死循环,因为你不可能,找到永远匀速运动下去的物体,因为每当你找不到这样的物体时,我就会给出一个理由,也就是,有力作用在上面
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