time signal in UTC

例句：

1. 1. The clock on the wall shows the time signal in UTC.
   墙上的钟显示的是UTC时间信号。
2. 2.The satellite transmits a time signal in UTC for all of Earth's inhabitants.
   卫星发送一个UTC时间信号，供地球上的所有居民接收。
3. 3. In order to communicate with other countries, we need to know the time signal in UTC.
   为了与其他国家进行通信，我们需要知道UTC时间信号。