"What we assure is that the technologies that do come on the market are safe and effective, but whether or not they should be used on a given case,a given patient, is a decision that is made by the individual practitioner."

VOA: standard.2010.04.07

Today we know, for example, if you can put one certain kind of element in your mouth or eat that, it doesn't necessarily mean you want to put the element next to it and your mouth as well, that might not be safe.

现在我们知道了，比如，即使你能把某一种元素放进嘴里,或者吃下去，这也并不一定意味着,你会把它邻近的元素也吃进嘴里,这可能会有危险，但。

麻省理工公开课 - 化学原理课程节选

Because I'm going to assume, I'm gonna take it that it's important to you, that you not be tortured. So by seeing who you want to keep safe, this will help you see which one you think is you.

因为我想,找出你们觉得对你们而言重要的,人物，你们想保护的人物,这样就能帮助你们,找到自己所支持的理论。

耶鲁公开课 - 死亡课程节选

"We are there to protect the streets of Britain, we are there because al-Qaida poses a threat to us as well as it does to other countries and we are there because if al-Qaida took control again or had an influence in Afghanistan, under a Taliban government, then the people of this government would not be safe,"

VOA: standard.2009.10.14