Stephen was stabbed to death in an unprovoked attack nearly five months ago.斯蒂芬在近5个月前无故遭到袭击，被捅死了。an act of unprovoked aggression无端的侵犯行为Her angry outburst was totally unprovoked.她的暴跳如雷完全是无理取闹。a totally unprovoked attack无端...
an act of unprovoked aggression无端的侵犯行为Stephen was stabbed to death in an unprovoked attack nearly five months ago.斯蒂芬在近5个月前无故遭到袭击，被捅死了。Her angry outburst was totally unprovoked.她的暴跳如雷完全是无理取闹。...