没有按钮需要游戏玩家你点击，它会在三脚短距离攻击敌人单位时自动起作用（游戏玩家你必须手动点击单位以便激活EMP）。

There is no button that you click to activate it. It will automatically effect an enemy unit if you attack it at short range (You will have to manually click on that unit for the EMP to activate).

youdao

这种榔头除了打击敌人以外，其实也没有什么实际作用。

The mace had little practical use other than in combat against other humans.

youdao