In Engpsh, a clock is used to tell time. The word "clock" comes from the Middle Engpsh word "clokke," which originated from the Old Dutch word "klokke," which means "bell." Here are some examples of sentences using "clock" in Engpsh:

I always set my alarm clock so I don't oversleep in the morning. (我总是设定闹钟，这样我早上就不会睡过头了。)
The clock on the wall is running slow. (墙上的钟慢了。)
My grandfather's pocket watch is an antique clock that has been passed down through generations. (我祖父的怀表是一个传世古董钟。)