merriness

例句：

1. 1. She was found to be very merry, despite her age.
   尽管她年纪大了，但她被认为非常快乐。
2. 2. The merry band played a lively tune on the street corner.
   快乐的乐队在街角演奏了一首欢快的曲子。
3. 3. The merry couple celebrated their 50th wedding anniversary with a grand party.
   快乐的夫妇用一场盛大的聚会来庆祝他们的50周年结婚纪念日。