double-edged
/ˈdʌblˈedʒd/adjective
1- (of a knife or sword) having two cutting edges（刀, 剑）双刃的。
1.1
- having two contradictory aspects or possible outcomes有相互矛盾的两个方面的; 可能有两种结果的：
the consequences can be double-edged.
产生的结果可能两种都有。
短语
a double-edged sword
- a situation or course of action having both positive and negative effects双刃剑（指正面和负面效果都有的局面或行为）。