As carefully as people work with radioactivity here, and using often much, much safer radioactive materials than radium bromide, and using them, and special hoods, and having special procedures, they still do a lot of checking with these Geiger counters to make sure everything's safe.

虽然在这里人们,用放射性物质都非常的小心，而且通常用的材料放射性,都比溴化镭要小得多，并且用的时候,都用特殊的容器,特殊的操作过程,但我们平时仍会用。

麻省理工公开课 - 化学原理课程节选

The person to ask is a magician, somebody whose profession it is to fool people and make it look like they can do things with magic.

你要问的是魔术师,他们的职业就是愚弄别人,让人相信他们有魔法

耶鲁公开课 - 死亡课程节选

We're also posting a practice exam for you to take, so after you're completely done your studying, it's good to have everything done before you take the practice exam, and then sit down just with this sheet here and your calculator, and ideally a timer, and make sure you can do the practice exam in the allotted amount of time.

我们还将给出一份模拟试题，因此在你完全复习好之后，最好先复习完,再做这份模拟试题，坐下来,只拿出这张表与计算器，最好还有个计时器，确保自己完成模拟题,在规定的时间内。

麻省理工公开课 - 化学原理课程节选

It's really been a powerful tool in molecular biology because I might have a very small copy of a gene that I'm interested in and I can make enough copies that I can start to do something else with it.

这确实是分子生物学的一项利器,因为我可能只有,很少量的感兴趣的基因拷贝,而我可以马上制造出足够数量的复制品,能使我用作其他用途

耶鲁公开课 - 生物医学工程探索课程节选

Polemarchus But Socrates challenges Polemarchus to a group, any group, cannot be a virtue in itself, and he trips Polemarchus up with a very, in many ways, familiar Socratic argument "? "Do we ever make mistakes?"

但苏格拉底仍挑战,对一个团体或任何团体忠诚本身，并不能当作是一种美德，他对付，Polemarchus，的方式,是大家非常熟悉的苏老式辩论,“我们曾犯错吗“

耶鲁公开课 - 政治哲学导论课程节选