body part of a pig

例句：

1. 1.The human body has many different parts that work together to maintain our health.
   人体有许多不同的部分，它们一起工作来维护我们的健康。
2. 2. The scientist studied the structure of the human body and how it works.
   这位科学家研究了人体结构及其工作原理。
3. 3.The doctor advised him to exercise regularly to keep his body part healthy.
   医生建议他定期锻炼以保持身体健康。