PLB

例句：

1. 1. I've been using myPLB for the past few months tostore all my important documents.
   我过去几个月一直在用我的个人信箱来存储所有重要的文件。
2. 2. The airline provided a PLBfor our luggage during the flight.
   航空公司在飞行期间为我们提供了行李缓冲区。
3. 3. The PLB is designed to protect your valuablesfrom bumps and scratches during transit.
   行李缓冲区的设计是为了在运输过程中保护你的贵重物品免受颠簸和刮擦。