This is due to the effectiveness of your digestive system.

人类消化系统的机能就是这样的。

youdao

Too much fat in your diet wears down your digestive system.

饮食中过量的脂肪会消磨你的消化系统。

youdao

Its a big number, but it is impossible to know how many will loiter in your digestive system.

这个数字是很大的，但你不可能知道有多少真菌只是在你的消化系统中闲逛。

youdao

Depending on what you call external and internal environment, this path that I'm tracing here, deep within your digestive system, is really directly connected to the outside world through both ends.

基于你们所谓的外环境和内环境,我在这里我所指的消化系统内部通路,它的两端确实与外界环境直接相通

耶鲁公开课 - 生物医学工程探索课程节选

If your roommate comes in and starts trying to tell you facts about the human digestive system, " you say, "Not now."

如果你的室友跑过来开始试图,告诉你有关人类消化系统的事实，你说“现在别说“

耶鲁公开课 - 死亡课程节选

Probiotics, found in yoghurt or sauerkraut, have been shown to aid your digestive system.

CNN: Vital Signs health tips

The foods promise to boost immunity, protect your heart and digestive system or help you sleep.

FORBES: Magazine Article

In addition, probiotics can help improve the function of your immune system and improve digestive function in general -- so I'm not surprised that you feel better after adding probiotics to your diet.

CNN: Can supplements block benefits of probiotics?