decay

过去式：decayed过去分词：decayed现在分词：decaying第三人称单数：decays

1. [U]腐烂；腐朽 the process or result of being destroyed by natural causes or by not being cared for
2. [U](社会、机构、制度等的)衰败，衰退 the gradual destruction of a society, an institution, a system, etc.

1. vt. & vi. (使)腐烂,(使)腐朽 make or become bad
2. vi. 衰败,衰退,衰落 fall to a lower or worse state;decline

• bacterial decay细菌性腐烂
• creeping political decay政治上的逐渐腐败
• dental decay牙齿龋蚀
• mental decay智力衰退
• moral decay道德沦丧
• premature decay早衰
• radioactive decay放射衰败

• tooth decay牙齿龋蚀

tooth decay蛀牙；龋齿；齵齿

decay rate衰减率；衰变率；衰变速度

radioactive decay[物]放射性衰变

exponential decay指数式衰减

decay time[物]衰减时间

in decay已腐朽，已腐烂

decay resistance耐腐性，耐腐蚀性能

decay curve衰变曲线；衰减曲线；退化曲线；余辉曲线

fall into decay损坏，腐烂；衰败

1. Naomi: Your entire body is begining to decay.
   直美:你的整个身体都在衰退。
2. What made the Roman Empire decay?
   罗马帝国为何衰亡？
3. The dampness of the climate decayed the books.
   气候潮湿，把书都霉坏了。
4. The vegetables have begun to decay.
   那些蔬菜已开始腐烂。

1. His mental decay is distressing.
   他的智力衰退令人苦恼。
2. Bacteria complete the job by causing decay.
   细菌通过引起腐烂而完成这个变化。
3. The dentist could detect no decay in her teeth.
   牙医检查了她的牙，未见有龋齿。