消化系统是身体里帮我们消化食物的部分，比如胃和肠。

The 消化系统 is the part of the body that helps us digest food, like the stomach and intestines.

如果你的消化系统好，吃东西以后就不会觉得不舒服。

If your 消化系统 is healthy, you won't feel uncomfortable after eating.