肠内部的用英文怎么说

肠内部在英语中可以翻译为 "intestines" 或者 "gut".

这个词来源于拉丁语 "intestinum"，意思是 "内脏" 或者 "内腔".

下面是一些例句：

The bacteria in our intestines help us digest food. (我们肠内的细菌帮助我们消化食物。)
He has a stomachache because he ate too much and his intestines are upset. (他肚子痛是因为他吃得太多，他的肠子不舒服。)
The doctor said that I have a blockage in my intestines. (医生说我肠内有一个阻塞。)