physical deterioration

例句：

1. 1. The elderly person's healthhas been physically deteriorating due tolack of exercise.
   由于缺乏锻炼，这位老人的健康正在逐渐恶化。
2. 2. The researchon the effects of pollutionon physical deterioration isstill in its early stages.
   关于污染对物理退化影响的研究仍处于初级阶段。
3. 3. Thescientist discovered that certain chemicals could cause physicaldeterioration in living organisms.
   科学家发现某些化学物质会导致生物体物理退化。