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1. The relay winding is the part of the transmission line that carries the power from one end to the other.
接力线路是传输线路的一部分，它把电力从一个端点传递到另一个端点。
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2. The relay winding was designed to protect the transmission line from damage caused by natural disasters.
接力线路的设计是为了保护传输线路免受自然灾害造成的损害。
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3. The engineers carefully checked the relay winding for any signs of wear or damage.
工程师们仔细检查了接力线路，以确定是否有任何磨损或损坏的迹象。