We use the expression, to go off, when we are talking about something that makes a large noise, for example,  我们说一个东西会发出很大的声音的时候通常用“go off”这个表达，

　　such as a bell or an alarm clock. 比如铃和闹钟。

　　You can also have a gun; the gun can go off means the gun fires and makes a noise. 也可能是一把枪，枪响的意思是有人开枪了并且枪发出很大的声音。

　　Well here, we are using this verb, to go off, when we are talking about an alarm clock. 而在这里，我们用动词词组go off来描述闹钟。

　　So, her alarm goes off at 6:20 - 20 after 6:00 in the morning - but she hits "the snooze button to sleep another ten minutes."    她的闹钟六点二十（早上六点过20分钟之后）响，但她“按一下‘贪睡按钮’再睡十分钟”。

　　The snooze button, "snooze," button, "button," is something on an alarm clock that allows you to sleep a little more, usually for five or ten minutes.  贪睡按钮（s-n-o-o-z-e b-u-t-t-o-n）是闹钟上的一个按钮，可以让你多睡一会，通常是五到十分钟。

　　So, it will stop your alarm, and then five or ten minutes later the alarm will go off again. 所以，它会暂时关掉闹钟，五到十分钟之后闹钟会再响。

　　So, that is called the snooze button. The verb to snooze means to sleep, so it allows you to sleep a little extra time. 所以它叫作贪睡按钮。动词snooze意思是“打盹儿”，所以贪睡按钮会让你多睡一小会儿。