preoccupation          
noun uk/priːˌɒk.jəˈpeɪ.ʃən/ us/priːˌɑː.kjəˈpeɪ.ʃən/
 [ C ](时常想的)想法、事情 
an idea or subject that someone thinks about most of the time
  My main preoccupation now is trying to keep life normal for the sake of my two boys. 我现在想得最多的是要为了我的两个儿子而尽力使生活保持正常。 
  [ C or U ]全神贯注,入神;心事重重 
the state of being worried about or thinking about something most of the time
  Lately, his preoccupation with football had caused his marks at school to slip. 最近他一心想着足球,学习成绩都下降了。 
 Synonyms: alarm (WORRY)concern (WORRY)consternationdistress worry