蚂蚁不能消化树叶中的纤维素，但有些真菌可以。

Ants can't digest the cellulose in leaves—but some fungi can.

youdao

在我们的身体中，有些食物是难消化的。

In our body, some food is indigestible.

《柯林斯英汉双解大词典》

消化是在口腔中唾液的作用下开始的。

Digestion begins in the mouth with the action of saliva.

youdao

I just wanted to point out that although you see these chlorine atoms in these drugs, in fact, I don't think I've ever seen an acid chloride in a final pharmaceutical product or drug that we take, and the reason is because they're so reactive that you wouldn't want to have that in something you digest.

我只是想指出一点,那就是尽管你在这些药物中看到了氯原子，实际上，我想我从来都没有在一个,成品的药用产品或者药物中见到过酰氯，这原因是因为它们太容易反应了,你不会想让它们出现在你要消化的东西中。

麻省理工公开课 - 化学原理课程节选