知识扩展

词语辨析
rot，decay，decompose 这些动词均有“烂、腐烂”之意。rot指蔬菜水果或肉类的分解、腐烂。decay通常指事物（国家或人）由盛转衰。decompose侧重指动物或植物类物体由于内部组织的分解而导致的腐烂过程。

中文词源： decay 腐烂 de-, 向下。-cay, 同-cad, 掉落，词源同case, accident. 引申义腐烂。 decay
精选例句

常见考点例句：

But a new us study in nature suggests the genetic decay has all but ended .

但是一项发表在自然杂志中的美国最新研究表明，遗传衰变几乎完全结束。

With radioactivity , if you give me a single atom of uranium , I can tell you it will eventually decay .

就放射性现象来说，你如果给我一个铀原子，我可以告诉你它最终会衰变。

The higgs should occasionally decay into a pair of photons , which would produce a bump in the photon-pair energy distribution .

偶尔，玻色子会衰变为一对光子，光子纠缠对能量分布不均可能产生效应。

A variety of chemical batteries have been tried , as well as inductive recharging schemes and even plutonium power cells that convert the heat from radioactive decay into electricity .

他们试过各种化学电池和感应充电方法，甚至用了可将放射性衰变产生的热能转化为电能的钚能量电池。

But planetary scientists reckon both may have subsurface oceans , kept liquid by a combination of radioactive decay and tidal heating from saturn and jupiter , their respective parent planets .

但是行星科学家推算它们表面可能都存在海洋，来自他们各自母星--木星和土星的潮汐加热以及放射性衰变使得它们保有液态水。