每件行李都必须贴上可识别的标签。

Every piece of luggage must have an ___identifiable tag attached.

所有参赛者都必须佩戴清晰可辨的号码牌。

All participants must wear clearly ___identifiable number tags.

丢失的包里有一些可辨认的个人物品。

The lost bag contained some ___identifiable personal items.