commuteKK [kəˋmjut] /kəˈmjut/發音com- 共同、一起+mute 改變→一起改變、互相調換展開收合com-字首共同、一起mute字根改變字面：一起改變、互相調換把一種東西換成另一種，引申為折換、把刑罰換輕；每天在兩地之間來回調換位置即通勤。動詞1通勤、往返She commutes to the city by train every weekday morning.她每個平日早上都搭火車通勤到市區。2減刑、減輕法律The governor commuted his sentence to twenty years in prison.州長把他的刑期減為二十年徒刑。3折換、兌換正式He chose to commute part of his pension into a lump sum.他選擇把部分退休金折換成一次領取的金額。名詞1通勤、通勤路程My commute takes almost an hour each way in traffic.遇上車流，我單程通勤要將近一小時。