Anti-rape alarm 防狼报警器
Advantage: use a loud sound to stimulate suspicious person, it will make people who near by notice. At that time you can have 10 seconds to go.
优点：用响亮的声音刺激可疑的人，它会发出通知让人们谁靠近。在那个时候你可以有10秒去。
Advantage: use a loud sound to stimulate suspicious person, it will make people who near by notice. At that time you can have 10 seconds to go.
优点：用响亮的声音刺激可疑的人，它会发出通知让人们谁靠近。在那个时候你可以有10秒去。
