burglar alarm

US /ˈbɜːr.ɡlər əˌlɑːrm/
UK /ˈbɜːr.ɡlər əˌlɑːrm/
"burglar alarm" picture
1.

防盗警报器, 防盗报警器

a device that makes a loud noise to warn people that a crime is happening or has happened

:
The burglar alarm went off when a cat jumped through the window.
一只猫跳窗而入时,防盗警报器响了。
We need to install a new burglar alarm system for better security.
我们需要安装一个新的防盗警报器系统以提高安全性。