obsess
/əbˈses; əb`sɛs/ v[Tn usu passive 通常用於被动语态]
fill the mind of (sb) continually 使（某人）牵挂、 惦念、 著迷或困扰
The fear of death obsessed her throughout her old age. 她晚年一直受著死亡恐惧的困扰.
obsessed by/with the fear of unemployment 老是害怕失业
She was obsessed with the idea that she was being watched. 她总觉得受人监视而心神不宁.