by mischance

• 不幸,偶然的不幸

by mischance的用法和样例：

例句

1. Her life was blighted by an unhappy marriage.
   她的一生被一桩不幸的婚姻所毁。
2. She has been much afflicted by this sad news.
   她为此不幸的消息感到很难过。