I should have also mentioned another really important information technology that developed in the nineteenth century was the Postal Service, although we had mail before then.

我应该也提到过,另一个产生于19世纪的,非常重要的信息技术,就是邮政服务，虽然我们在此之前就有信件往来。

耶鲁公开课 - 金融市场课程节选

One class of them is beta-blockers, they bind to beta-adrenergic receptors, which are receptors that exchange information between your nervous system and the contractile system that beats your heart and that causes the heartbeat.

一类药物是β阻断剂,它们与β肾上腺素受体结合,这种受体能够在神经系统和,控制心跳的心肌收缩系统之间传递信息,从而产生心跳

耶鲁公开课 - 生物医学工程探索课程节选