1.drop out 退出
He'd dropped out of high school at the age of 16.
他16岁时就从高中退学了 。
2.discourage someone from doing 阻拦
typhoons that discouraged shopping and leisure activities.
打消购物和休闲活动的念头的数起台风 。
3.obsess about something 困扰;心神不宁
A string of scandals is obsessing America.
一系列丑闻在困扰着美国 。