ketone body

例句：

1. 1.The body produces ketone bodies during fasting to fuel the brain.
   在禁食期间，身体会产生酮体来为大脑提供燃料。
2. 2. Ketone bodies are a source of energy for the human body.
   酮体是人类身体的能量来源。
3. 3. The ketone bodies in urine can indicate liver function or disease.
   尿液中的酮体可以表明肝脏功能或疾病。