recall buoy

例句：

1. 1.The recall buoy was a symbol of the lost sailors' memories.
   回忆浮标是失落的水手们记忆的象征。
2. 2.The buoy was used to help people find their way back to shore after a storm.
   浮标被用来帮助人们在暴风雨后找到回家的路。
3. 3. The buoy was a reminder of the importance of staying safe at sea.
   浮标是一个提醒人们海上安全重要性的提醒。