The belief that we can always start over – that things can always be made better – has been a defining characteristic of the United States and, at times, our greatest strength.

我们的信念在于随时可以重新开始——事情可能总是做的更好——这是美国一个最重要的特征，有时还是我们最大的长处。

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In most metals these rows can readily slip past one another, a characteristic that will lower the overall strength of the material.

在大部分金属中，行列可以很容易的相互滑动，这一特性会降低金属的总强度。

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In a previous study, Trinkaus found that shoe-wearing and barefoot human groups show characteristic differences in the size and strength of their middle toe bones.

Trinkaus在先前的研究中发现，穿鞋和赤足人群的脚部特征存在差异，具体体现在他们中趾骨的大小和力量上。

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I'm honored to call Dave a friend, and have no doubt he'll whip this with characteristic strength and grace.

WSJ: Rep. Camp Has Non-Hodgkin's Lymphoma