auxiliary fibers

例句：

1. 1. The auxiliary power system is responsible for providing backup power during emergencies.
   辅助动力系统在紧急情况下负责提供备用电力。
2. 2. The auxiliary light is a useful tool for illuminating dark areas.
   辅助灯是一个有用的工具，用于照亮黑暗区域。
3. 3. The auxiliary battery pack is designed to provide additional power when the main battery is depleted.
   辅助电池组设计为在主要电池耗尽时提供额外电力。