延长物

例句：

1. 1. The bridge is extended over the river to connect two towns.
   这座桥横跨河流，连接两个城镇。
2. 2. The company plans to extend its operations into new markets.
   该公司计划将其业务扩展到新的市场。
3. 3.The train will extend for another hour before arriving at its destination.
   火车将在到达目的地前再行驶一小时。