双语例句原声例句
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结构上任何一点处的位移沿两个方向在一定界限内作周期性改变。
The displacement at any point on the structure will vary periodically between specific limits in either direction.
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然而现在科学家称大灭绝的周期性实际上证明涅墨西斯星球理论是错误的，因为随着时间的推移，在和其他星球的相互作用下，星球的运行轨迹会发生改变。
But now scientists claim that the regularity of the mass extinctions actually disproves the Nemesis theory because its orbit would have changed over time as it interacted with other stars.
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收入的改变，工作的改变和家庭费用的改变反映了这种周期性变化，而其它指标，如作为可支配收入部分的个人存款，数十年来已经逐渐减少了。
Changes in incomes, jobs and home prices reflect this cyclical behavior, while other indicators, like personal savings as a percentage of disposable income, have shown a gradual decline over decades.
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We have a table of the elements with properties varying periodically with atomic mass, so we compress all of that information and refer to it as the Periodic Table.
我们有一个元素表，其中的元素的特性,随着原子质量的改变而引起周期性的变化，所以我们将所有的信息精简,将它变成一个周期表。
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