habit, practice, tradition, convention, usage, manners, custom。例句：他已改变了他的坏习惯。He has reformed his bad habits.
短语
习惯于 get used to ; be used to ; accustomed to ; be in the habit of
习惯性 Customary ; habituation ; habit ; drug habituation
学习习惯 Study habits ; leaning habit ; learning habits ; Work Habit。
