- 万一发生火灾,按铃。
In case of fire, ring the bell.
- 万一他迟到的话怎么辨?
What if he should happen to be late?
- 万一发生火灾,按下按钮。
In case of fire, push the button.
- 万一来不了,我会先给你打电话。
In case I can’t come, I’ll give you a call beforehand.
- 万一有紧急情况,联系我的代理人。
In case of an emergency, get in touch with my agent.