1. Studies have shown, for example, that two drugs are about equally effective in treating macular degeneration, an eye disease. 例如，有一些研究表明，两种药物治疗黄斑变性这种眼病的效果差不多。
2. Intensive farming in the area has caused severe degeneration of the land. 这个地区的集约化农业使得土壤严重贫瘠化。
3. Eburnation: degeneration of bone into a hard ivorylike mass. 骨质象牙化：骨头退化成坚硬的象牙质。
4. Wallerian degeneration is named after Augustus Volney Waller. 沃勒变性是以奥古斯都·沃尔尼·沃勒命名的。
5. After ovulation, spermiation or natural degeneration, the volume of gonad was smaller in stage VI. 在排卵期、精子化期或自然退化期，性腺体积变小。
