fast-acting relay

例句：

1. 1.This new relay system will allow for faster communication between the two cities.
   这个新的中继系统将使两个城市之间的通信更快。
2. 2.The relay station is designed to quickly transfer signals across long distances.
   中继站被设计用来在长距离内快速传输信号。
3. 3.The relay was a crucial part of the emergency response team's operation.
   中继是紧急响应团队操作的关键部分。