So, you could train a pigeon to peck for food but that's because pecking for food is a very natural response.

你可以训练鸽子啄食,但这只是因为啄食是种自然反应而已。

耶鲁公开课 - 心理学导论课程节选

Because what that's going to do is, it's going to force you to take practice exams.

因为在辅导班上，他们会让你做许多的模考训练。

准备LSAT的时候 - SpeakingMax英语口语达人

So they're optional, but they're very, very, very highly encouraged that you do these, because this is going to give you practice for the types of problems that are going to be on the exam.

虽然它们是选做的，但是它们非常非常，非常值得你们去做，因为这对你们来说是一次训练,是用来熟悉考试题型的。

麻省理工公开课 - 化学原理课程节选

Whenever your church would get a copy of one of these letters from Paul,you would have scribes,often slaves, because slaves were especially trained to be scribes.

当一个教会得到保罗书信的一份副本时,你就要让抄写员，他们通常是奴隶，因为奴隶被专门训练成为抄写员。

耶鲁公开课 - 新约课程节选

And Jenner, because he was a trained physician, because he knew something about the scientific method, did something that these more ancient healers had not done in the past, was that he wrote down what he did.

而詹纳,因为他是个受过训练的医生,懂得一些科学方法,他做了那些古老的医生们没有做的事,就是记录了自己的所作所为

耶鲁公开课 - 生物医学工程探索课程节选