“按”是一个常用的动词，意思是用手往下压，比如按门铃或者按电梯的按钮。

"按" is a common verb meaning to press down with the hand, like pressing a doorbell or an elevator button.

它也可以表示“按照”，就是根据某个方法或规定去做事。

It can also mean "according to," which is to do something based on a method or rule.