commencement [kəˈmɛnsmənt]

例句:

• the commencement of the financial year
  财政年度的开始
  
• Would passengers please put out cigarettes before the commencement of the flight.
  请乘客在飞机起飞前熄灭香烟.
  
• Who gave your commencement address?
  谁给你们做了毕业演说? oration指 “正式演说”,如:
  
• Today we witness the commencement of that broadcast.
  来自VOA
• You told me your commencement speaker was not exactly inspiring.
  来自WSJ
• His effective government will synchronize with the commencement of his reign.
  来自H. J. Laski
• He was invited to speak at the commencement.
  他受邀在毕业典礼上讲话。
  来自《权威词典》