But you actually need to keep a few caveats in mind as you do this, which is the fact that trends predict a lot of chemical properties, but they can't predict everything in terms of biological properties.

不过在你使用的过程中,需要牢记一些注意事项,那就是元素周期律可以预言很多化学性质，但是不能预言一切性质,比如生物学性质。

麻省理工公开课 - 化学原理课程节选

It's also used as a local anesthetic for other types of small procedures.

它还会在一些小的治疗过程中,作为局部麻醉剂使用。

麻省理工公开课 - 化学原理课程节选