号炮报时

例句：

1. 1. The clock on the wall chimes every hour to mark the time.
   墙上的钟每小时敲响一次来标记时间。
2. 2. The bell rang at exactly 9:00, signaling the start of the meeting.
   钟在9点整敲响，标志着会议的开始。
3. 3. The watchman kept the town's clocks in perfect order, ensuring everyone was aware of the time.
   看门人保持了镇上的时钟井然有序，确保每个人都知道时间。