vicious a.恶毒的,凶残的

　　Crime leads to prison, which leads to unemployment, which leads to crime. ;由罪犯而入狱,入狱而 失业,失业而犯罪. (来源：英语学习门户 http://www.EnglishCN.com)

　　It is a vicious cycle. ;这是恶性循环.

　　yell n.号叫,叫喊

　　At the football match between China and Japan,we yelled together for our team. ;在中日足球比赛上,我们 为我们的球队大喊加油.