Foods are broken down in the digestive tract.

食物在消化道内被分解。

Fusobacteria is commonly found in the digestive tract.

梭桿菌常见于消化道。

The objective is to investigate the distribution and morphology of the 5-HT immunoreactive cells in the digestive tract of Manis pentadactyla.

目的是研究中国穿山甲消化道 5-HT 免疫活性细胞的分布和形态。

It's sort of like the digestive tract story.

这是和消化道故事差不多的故事。

They can invade the digestive tract and block nutritional uptake.

它们可以入侵消化道，然后阻止营养的摄取。