wale narrowing

例句：

1. 1. The road is narrowing as we approach the bridge.
   随着我们接近桥，道路变得越来越窄。
2. 2. The river is narrowing due to erosion.
   由于侵蚀，河流正在变窄。
3. 3. The population is narrowing as the economy grows.
   随着经济的发展，人口正在减少。