The protector is able to be used as electric shock when the enemy is near or to spray the enemy if he is from a distance and the enemy is subdued easily with no harm.
在有匪情时，贴身可电击、稍远可喷雾，在保证不伤害嫌犯的情况下，可轻易将其制服。
The technical problems to be solved are: the design of mouth protector and its connection with the broadsword body, shock-proof of power supply and its connection with the broadsword body.
需要解决的技术问题：护口设计及其与刀身的连接，电源防震及其与刀身的连接。
The technical problems to be solved are: the design of mouth protector and its connection with the broadsword body, shock-proof of power supply and its connection with the broadsword body.
需要解决的技术问题：护口设计及其与刀身的连接，电源防震及其与刀身的连接。
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