in the supposed contingency

• 在发生意外事故的情况下； 万一

in the supposed contingency的用法和样例：

例句

1. Call the police in the event of an emergency.
   万一紧急情况就打电话给警察。
2. Should I see her, I would ask her the question.
   万一我见到她，我就问她这个问题。