The power cost for a spell or combat art no longer increases when upgraded.For example, the Master I version of Backstab will cost the same amount of power as Apprentice I Backstab.是什么意思_The power cost for a spell or combat art no longer increases when upgraded.For example, the Master I version of Backstab will cost the same amount of power as Apprentice I Backstab.在线翻译_英语_读音_用法_例句