back-seat driver

英 [ˌbæk siːt ˈdraɪvə(r)]

美 [ˌbæk siːt ˈdraɪvər]

n.  对驾驶者指手画脚的乘客; 企图越权者

牛津词典

noun

• 对驾驶者指手画脚的乘客
  a passenger in a vehicle who keeps giving advice to the driver about how he or she should drive
• 企图越权者
  a person who wants to be in control of sth that is not really their responsibility

柯林斯词典

• 对驾驶员指手画脚的乘客
  If you refer to a passenger in a car as aback-seat driver, they annoy you because they constantly give you advice.
• N-COUNT （尤指政客中）企图越俎代庖的人，干涉与己无关之事的人
  If you refer to someone, especially a politician, as aback-seat driver, you disapprove of them because they try to influence a situation that does not concern them.
  1. They accused the former prime minister of being a backseat driver.
     他们指责前首相越俎代庖。

双语例句

• Don't ask Peter about the work, he's a back-seat driver.
  不要向彼得问有关这项工作的事，他是多管事的人。
• My assistant has become a bit of a back-seat driver and it's getting on my nerves.
  我的助手已变得有些多管闲事，因而使我觉得很是不安。
• No one likes Daphne because she's a back-seat driver.
  没人喜欢达芙妮，因为他是个后座司机。