contingency mode

例句：

1. 1. In the event of an emergency, our company will respond immediately.
   在紧急情况下，我们公司会立即响应。
2. 2. The system is designed to switch to a contingency mode automatically in case of poweroutages.
   该系统设计为在电力中断时自动切换到应急模式。
3. 3. When the main power supply fails, we can switch to a contingency mode for backup power.
   当主要电源失败时，我们可以切换到应急模式以获取备用电源。