闹钟在英语里面怎么说

In Engpsh, a clock or device that makes a loud noise at a specific time to wake someone up is called an "alarm clock." You can also refer to it simply as an "alarm." Here are a few example sentences using "alarm clock":

I set my alarm clock for 6:00 AM so I can get up early for work.
My alarm clock didn't go off this morning and I overslept.
I usually use my phone as an alarm clock, but I also have a small travel alarm clock that I take with me when I'm on vacation.

You can also use the phrase "wake-up call" to refer to something that causes someone to become more aware of a problem or situation that they need to address. For example:

The company's financial troubles were a wake-up call for the management team to make some changes.
The loss was a wake-up call for the team, and they worked harder in the following games to improve their performance.