isolated danger beacon

例句：

1. 1. The isolated danger beacon was a warning to all who passed by.
   孤立的危险信号灯是所有经过的人都发出的警告。
2. 2. The isolated danger beacon was used to alert the military of an impending attack.
   孤立的危险信号灯被用来警告军队即将到来的攻击。
3. 3. The isolated danger beacon was a symbol of caution and preparedness.
   孤立的危险信号灯是一个警示和准备的象征。