机体

例句：

1. 1. The body needs to be warmed up before exercise.
   在锻炼前，身体需要预热。
2. 2. The human body is made up of many different organs.
   人体由许多不同的器官组成。
3. 3. The research on the human body has greatly improved our understanding of disease.
   关于人体的研究极大地提高了我们对疾病的理解。