ill blood

例句：

1. 1. She was ill for several days before she could recover.
   她病了好几天才能康复。
2. 2. The sailors were suffering from scurvy when they landed on the island.
   当水手们登陆岛屿时，他们正遭受坏血病的折磨。
3. 3. Scurvy is a serious condition that can be prevented by eating a balanced diet.
   坏血病是一种严重的状况，通过均衡饮食可以预防。