o'clock
01
点, 整
put after the numbers one to twelve to show or tell what time it is, only when it is at that exact hour
例子
I usually go to bed around 11 o'clock.
我通常11点左右睡觉。
She finishes her piano practice at 7 o'clock.
她在7点结束她的钢琴练习。
点, 整