flukes

例句：

1. 1.He won the lottery and was on cloud nine.
   他中了彩票，高兴得不得了。
2. 2.She had a fluke meeting with her old friend.
   她偶然遇到了老友。
3. 3.The fluke of fate led them to success.
   命运的巧合使他们获得了成功。