mindmap root((偏转)) swerve suggests a usually somewhat abrupt physical, mental, or moral turning: suddenly ~d to avoid hitting an animal. veer implies a major change in direction often under an outside influence: at that point the road ~s to the right. deviate implies a turning from a customary or prescribed course and often implies irregularity: the witness never ~d from her story. depart suggests a deviation from a traditional or conventional course or type: a book that ~s from the usual memoirs of a film star.（tradition传统: 指代代传承的风俗信仰applies to customs or beliefs passed on or handed down from generation to generation，如it’s a tradition to give gifts at Christmas圣诞节送礼物是传统习俗，如keep up revolutionary tradition保持革命传统，如Japan's unique cultural traditions日本独特的文化传统(=traditional culture传统文化)，按照传统是by tradition，如by tradition, nobody interrupts an MP’s maiden speech按照传统，任何人不能打断下议员的首次演说，也可以说依照传统） digress applies to a departing from the subject at hand: frequently ~ed during his lecture. diverge may equal depart but usually suggests a branching of a single path into two or more leading in different directions: after medical school their paths ~d.