他們吃了一兩個小時。
You've been chewing away all afternoon, you can't still be hungry.

你吃了一下午,肯定不會餓了。 chew sth ? away
The rats have chewed away some of the woodwork.

老鼠啃壞了一些木器。
The snakes chewed the rats away.

蛇已經吃了那些老鼠。

這是一個需要你深思的問題。
That is a difficult thing for her to chew on.

那是一件需要她深思的難事。 chew sth ? on
We'll chew on your suggestion.

我們將仔細考慮你的建議。
They wanted to chew your problem on.

他們想仔細考慮一下你的問題。

那位司機因為開車莽撞,被警察狠狠批評了一頓。
The sergeant chewed out the recruits as soon as they arrived.

新兵們一到,那上士就把他們臭罵一頓。