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- What made the Roman Empire decay? 罗马帝国为何衰亡？
- Old civilization may fall into decay. 古老的文化可能会渐渐衰落下去。
- The empty house has fallen into decay. 那座空房已成一片颓垣。
- The tree exhibited signs of decay. 那棵树显示腐蛀的迹象。
- His mental decay is distressing. 他的智力衰退令人苦恼。
- Growth and decay are vital processes. 生长和衰亡是生命过程。
- The dentist could detect no decay in her teeth. 牙医检查了她的牙，未见有龋齿。
- Cavities in teeth are caused by decay. 牙齿的蛀洞是由蛀蚀造成的。
- Human remains, especially after cremation or decay. 骨灰人的遗骸，尤指在火化或腐烂后
- radial decay 径向衰变
- A source of spreading corruption or decay. 腐败的原因传布腐败或腐朽的根源
- Breakdown or decay of organic materials. 腐烂; 分解指有机物的分解或腐败
- In truth, moral decay hastened the decline of the Roman Empire. 事实上，道德沦丧加速了罗马帝国的衰亡。
- Radial distances from CP or CL are too short. 从投影中心或投影中线的辐射距离太短。
- The castle has fallen into decay in the last100 years. 这座古堡在近100年里渐渐荒废了。
- Many stems and toots show radial symmetry. 很多的茎和根都是辐射对称的。
- A radial part, such as a ray, spoke, or radius. 放射部辐射状的部分，如光线、轮辐或半径
- The immediate product of the radioactive decay of an element. 继承元素某种元素放射性衰变的直接产物
- Characterized by radial symmetry. 放射状对称的以放射状对称为特征的
- Having a radial form, as a starfish. 放射线状的具有放射性形状的，如海星
