减弱体力的

例句：

1. 1. The strength of the rope is weakening with each passing day.
   绳子的强度随着每一天的过去而减弱。
2. 2.The disease weakened her immune system.
   这种疾病削弱了她的免疫系统。
3. 3. The economy is gradually weakening as the population grows older.
   随着人口的增长，经济正在逐渐减弱。