闹钟的开和关是通过拔出和按入闹铃开关实现的.Pulling out the alarm switch activates alarm and pushing it deactivates it.钟走到5点30分时, 闹铃就会响起来.When it comes to 5:30, the clock will ring its alarm.可以通过设置闹铃提醒服药.Timers can be set as reminders to take...

“闹铃”的英语可以翻译为：quarter-bell ...