The satellite will serve as the relay link to control during future missions to the moon.

这颗卫星将作为未来登月任务的中继控制链路。

The TDR satellite will act as a relay, linking scientists with dozens of spacecraft watching different parts of the globe.

TDR卫星将作为一个中继，将科学家与数十个观测地球不同地区的航天器连接起来。