unclaimed luggage

例句：

1. 1. The lost suitcase was unclaimed by the police.
   那个丢失的手提箱警方没有认领。
2. 2. The airlines have a policy to return unclaimed luggage to its rightful owner.
   航空公司有政策将未认领的行李归还给其合法所有者。
3. 3. The lost items were eventually found and returned to their owners after an extended period of time.
   经过一段长时间后，这些遗失的物品最终被找到并归还给了它们的合法主人。