背包保险柜是制订是为了提高旅客的意识，为自身安全，是一个简单的参考，如果他们需要帮助。
BackPack safe was developed to raise travellers' awareness of their own safety and is an easy reference if they need help.
背包保险柜是制订是为了提高旅客的意识，为自身安全，是一个简单的参考，如果他们需要帮助。
BackPack safe was developed to raise travellers' awareness of their own safety and is an easy reference if they need help.
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