Some believe that the hardened gray iron used to make the components simply "fatigues" with age-as metal parts that go through millions of stress reversals eventually do.

有些人认为硬化的灰铸铁过去曾使零件很容易腐朽老化(因为经过数百万次的应力反向处理后的金属零件最后都会这样)。

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For example, when 600 people age 85 and older were asked to identify the key components of successful aging, the answer that topped their list surprised even the experts: resilience.

例如，600名85岁以上的老人在如何成功优雅变老的问卷中做选项时，答案最多的选项使专家们都瞠目结舌：适应力。

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His plan calls for identifying all the components that cause human tissue to age, and designing remedies for each of them - forestalling disease and eventually pushing back death.

根据他的方案，所有引起人类组织器官衰老的因素应该被找出来，而后一一为它们设计治疗方案——阻止疾病发生进而远离死亡。

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As nuclear weapons age, their materials and components degrade in unpredictable ways.

CENTERFORSECURITYPOLICY: Center for Security Policy | Politics and the Test Ban Treaty, By George F. Will, Newsweek, 20 October 1999

The difference is a matter of winemaking talent, location and vine age, and all the mysterious components that make up terroir.

WSJ: Does Good Wine Come to Those Who Wait? | On Wine by Lettie Teague

The mere fact that the Little Ice Age ended a little over 100 years ago, and that temperatures have warmed during the course of recovering from the Little Ice Age, tells us absolutely nothing about the remaining components necessary to support an assertion that humans are creating a global warming crisis.

FORBES: The Death Of Global Warming Skepticism, Or The Birth Of Straw Men?