The Greek doctor Hippocrates advised his patients to chew on the bark and leaves of the willow.

VOA: special.2009.10.20

However, if you do happen to be an English or a literature major or someone who's just very serious about reading at that level, you will find plenty to chew on here.

然而，如果你刚好主修英语或是文学,或是任何以主修的水平很认真阅读的人，你将会在这里发现很多值得咀嚼的东西。

耶鲁公开课 - 1945年后的美国小说课程节选

And you could interfere with a translation by degrading messenger RNA, for example. If you had a way to specifically chew up all the RNA molecules that are responsible for making a particular protein, you could stop it from being expressed even though your cell is trying to make it.

而你就可以通过,降解其mRNA来进行干扰,再举个例子,如果你能把表达特定蛋白的RNA,统统揪出来捣毁的话,你也能阻止这段基因表达,哪怕是你的细胞在努力表达这段基因

耶鲁公开课 - 生物医学工程探索课程节选

According to the journal Biological Reviews,most dinosaurs did not take the time to chew their food.

VOA: special.2010.06.04

The taste is a little strong for some people, yet others chew on parsley to freshen their breath.

VOA: special.2009.06.02

People chew it to cleanse the tastebuds in the mouth and support fresh breath.

VOA: special.2011.03.16