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By the spring of nineteen forty-one, Europe had been at war for a year and a half.
VOA: special.2009.05.17
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When we did the spring, we had this theory of Hooke's Law that told us something, and we built a simulation, or built some tools around that theory.
当我们写弹簧程序的时候,我们有胡克定律来告诉我们原理，然后我们建立了一个仿真模型，或者说是在这个理论基础上建立了一些工具。
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With some degree of confidence, I'm working with a reliable spring and then I will get the mass of the elephant.
这时我就对弹簧有信心了,我用的是一个可靠的弹簧,我能测出大象的质量
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And Sue wore a beautiful white dress with a huge steel-spring bustle in the back.
VOA: special.2009.11.28
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Each year it's dramatized by the cycle of the seasons, And at a certain time of the year it seems that The forces of darkness and chaos are prevailing but each spring, Once again, cosmic order and life return.
每年这冲突都由季节的轮回戏剧性地体现出来，仿佛是每年都有一个时期,弥散着黑暗和混乱的势力，可是每当春天来临，宇庙的秩序又恢复了。
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Most American colleges and universities take a spring break.
VOA: special.2009.04.02
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What is the heart but a spring, ?" or reason but a means of calculating pleasures and pains."
除了跳动，心脏又为何物，除了感觉愉快和痛苦，人为什么而活“
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He would try to explain it this way when students asked for a top grade just for studying hard in chemistry class: What if a baseball player came to spring training and worked harder than all the others, but still could not play well.
VOA: special.2009.03.12
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He goes on in a letter in spring 1862 the war still isn't a war against slavery in any official sense and he writes home to his brother saying he wishes he had the, quote, "Moral courage to desert," because he no longer wants to serve this cause.
在1862年春天的信中,从政治角度来说,那还不是真正意义上的反奴战争,他写信给他哥哥说,他希望有点"道德气节",因为他不想再为这理由继续下去
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On an overcast spring day, and descendants of internees - gathered at the college for a conference to recall those times, and to create a memorial to those who lived through it.
VOA: standard.2010.06.22
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I tie a spring to my back and I anchor it to the wall and see how much the spring stretches before the two forces balance.
我把弹簧一端系在背后,另一端固定在墙上,观察两个力平衡时弹簧的伸长量
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He said, take a spring to outer space and we'll hook up some objects to them and see how fast they move and do a comparison.
他说,把一个弹簧带到外太空,往上面挂物体,看看它们运动的快慢,并进行对比
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You hook one end of the spring to a wall and you pull it from rest by some amount and you attach the one kilogram mass to it.
你把弹簧的一端固定在墙上,然后拉伸一段距离,接着你把 1 千克物体固定在上面
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I give you a spring and an elephant.
我给你弹簧和大象
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You cannot say to me, "Take a force, due to a spring, and see what force it applies and divide by the acceleration and get the mass, " because we haven't defined force, either.
你不能说,"给弹簧施加一个力,看看它能提供多大的力,然后除以加速度,得到质量",因为我们还没给力下一个定义
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We did the comparison with the elephant or something; a is the second derivative of x and for this problem, when F is due to a spring, we know the force is that by studying the spring.
我们也已经把它与大象或其它东西作过比较,a 是 x 的二阶导数,在这个问题中,F 是由弹簧产生的,我们在讨论弹簧问题时已经知道了力的大小
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