1. Automatic bell devices
2. An automatic bell device is used to remind the time of on and off work. It will ring at the time of on and off work.
英语翻译一,自动打铃器二,自动打铃器是用来提醒什么时候上下班的.一到上班时间就会响,一到下班就会响.
1. Automatic bell devices
2. An automatic bell device is used to remind the time of on and off work. It will ring at the time of on and off work.