indigestible

1. ADJ Food that is indigestible cannot be digested easily. 難消化的

In our body, some food is indigestible. 在我們的身體中，有些食物是難消化的。

2. ADJ If you describe facts or ideas as indigestible, you mean that they are difficult to understand, complicated, and dull. 難理解的[表不滿]

...a dense, indigestible and wordy book. ...一本冗長(zhǎng)難懂的書。