If that's the case, studying how these spiders' weaving skills deteriorate with age could help scientists learn more about aging's effect on human behavior, too.

如果真的如此，研究蜘蛛的织网能力是怎样随年龄退化的，或许有助于科学家了解更多关于人类的衰老行为现象。

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Cement mortar in engineering structures is often subjected to the effect of erosive ions and thus performance of cement mortar will deteriorate.

工程结构中的水泥砂浆在使用过程中经常会受到侵蚀性离子的作用，致使水泥砂浆性能劣化强度降低。

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Some safety parameters deteriorate, such as lower Doppler effect, lower delayed neutron effectiveness and high- er sodium void effect.

在反应性参数方面，导致多普勒效应与有效缓发中子份额降低，钠空泡效应增大；

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So this means that the perceived quality of private-sector loans to the Spanish government would deteriorate - which, in theory, would have the perverse effect of making it harder and more expensive for Spain to borrow from conventional sources.

BBC: Messy Spanish rescue