commute  
 verb uk/kəˈmjuːt/ us/kəˈmjuːt/
  (TRAVEL)      
 C1 [ I ]上下班往返;往返于工作地点与家之间;通勤 
to make the same journey regularly between work and home
  It's exhausting commuting from Brighton to London every day. 每天上下班要往返于布赖顿与伦敦之间,令人疲惫不堪。 
   (CHANGE)            
 [ T ] formal变换,改变 
to change one thing into another
  People used to believe that you could commute base metals into gold. 人们过去曾认为能将贱金属变成黄金。 
  [ T ] finance & economics specialized改变,改换(支付方式) 
to exchange one type of payment for a different type
  I think I'll commute my life insurance into an annuity. 我想把人寿保险改为年金保险。 
  [ T ] law specialized减轻(刑罚) 
to change a punishment to one that is less severe
  Her sentence was commuted from death to life imprisonment. 对她的判决由死刑减为无期徒刑。 
 commute       
noun [ C ]  informal uk/kəˈmjuːt/ us/kəˈmjuːt/
 上下班往返;往返于工作地点与家之间;通勤
a regular journey between work and home
  It's at least an hour's commute to work. 上班路上至少要花1个小时。