point of low urether

例句：

1. 1. The teacher pointed to the map on the wall.
   老师指着墙上的地图。
2. 2. The project has several key points that need to be addressed.
   这个项目有几个关键点需要解决。
3. 3. The artist drew a detailed picture of the city's landmarks.
   艺术家画了一幅城市地标详细图。