double scissors meaning in English

两次交叉

As any new technological revolution brings us convenience and puzzle in ethics as well , network is not fierce floods and savage beasts , but it is a double scissors . lt has brought about positive influence but also inevitably some bad effects such as news spread unchecked , trash polluted , network addictation , hacker action even computer crime . how to promote the teenagers news techonology knowledge and take them moralty and intellect
就像任何新技术革命在给我们带来便利的同时，也会给人类带来伦理道德上的困惑一样，网络不是洪水猛兽，但它却是一把“双刃剑” 。它在给青少年带来积极影响的同时，也不可避免会造成一些负面效应如信息泛滥，垃圾污染，游戏网恋，网络上瘾，黑客行为，乃至网络犯罪。