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

You can become dehydrated and die just as a result of the loss of water there, because of your body's natural response to the infection.

就会脱水,而失水的后果就是死亡,这是你身体对于这种感染的自然反应

耶鲁公开课 - 生物医学工程探索课程节选

So,Once they are lost in response to a toxic sound or to an antibiotic it cannot be regenerated by natural means.

一旦因噪音或抗生素遭受损失,就难以再生。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选

He sang songs of such beauty that the entire natural world would move and dance in response. This is the story of Orpheus that we have received up to this point in Milton's poetry.

他的歌声是如此动听，整个大自然,都会随之翩翩起舞，这是到目前为止,弥尔顿的诗歌所讲述的俄耳甫斯的故事。

耶鲁公开课 - 弥尔顿课程节选

But because of the similarity of the viruses, the immune response that people developed would also protect them against natural infections with variola.

因为这两种病毒很相像,人体的免疫应答也能保护自己,免受天花的感染

耶鲁公开课 - 生物医学工程探索课程节选