buffer safety horn

例句：

1. 1. The police used a buffer safetyhorn to alert the public during theemergency.
   警方使用一个缓冲安全喇叭在紧急情况下警告公众。
2. 2. The driver was instructedto use a buffer safety horn whenapproaching a school zone.
   司机被指示在接近学校区域时使用一个缓冲安全喇叭。
3. 3. The new traffic signal has a buffersafety horn that can be activated remotely.
   新的交通信号有一个可以远程激活的缓冲安全喇叭。