neaten       
verb [ T ] uk/ˈniː.tən/ us/ˈniː.t̬ən/
 使整洁,整理
to make something tidy
  She's careful to neaten her desk before she leaves in the evening. 她晚上离开之前都会仔细地把桌子收拾整齐。 
 Could you neaten up those bookshelves, please? 请把那些书架收拾整齐好吗? 
 Synonym: tidy