observance [əbˈzɜ:rvəns]

例句:

• The trading day is shortened in observance of the Labor Day holiday.
  因庆祝劳工节，这个交易日交易时间缩短了。
  
• Observance of the law is a matter of principle for us.
  守法是我们的一个原则问题。
  
• observance of the law
  守法
  
• To do the observance due to sprightly May.
  来自Dryden
• He raised his own children without religious observance.
  来自WSJ
• Forty years later, the annual observance has become a global event.
  来自VOA