流氓行为 meaning in English

act of hoolighism
knavery
rascalism
rascality

The minister related many a touching incident in the lives of the departed , too , which illustrated their sweet , generous natures , and the people could easily see , now , how noble and beautiful those episodes were , and remembered with grief that at the time they occurred they had seemed rank rascalities , well deserving of the cowhide
牧师还讲述了这几个孩子生前的一些感人事迹，他们天真可爱，慷慨大方。人们现在一眼就看出他们那时的行为是多么地高尚，令人赞美。可当时这些却被认为是地道的流氓行为，人们恨不得用鞭子抽这些孩子。
A questionnaire conducted to nearly one thousand students of nine middle schools in changchun shows that middle school students are the main community browsing the network and both good and bad information on the network exerts a deep impact upon their psychology . some of them indulge themselves into network chats and entertainments ; some of them even reveals immoral trends
通过对长春地区九所中学近干名学生进行问卷测试发现：中学生是占相当比例的上网群体，存在着良莠不齐的网络信息影响学生身心健康；学生不能有效利用网络，只是沉溺于网吧聊大、体闲和娱乐；部分青少年学生存在网络流氓行为和黑客行为等问题。