extention

例句：

1. 1.The tree's branches are extending towards the sky.
   树枝向天空伸展。
2. 2. The road is extending beyond the city limits.
   道路延伸到城市边界之外。
3. 3. The project aims to extend the network coverage.
   该项目旨在扩展网络覆盖范围。