distance block

例句：

1. 1. The distance between the two cities is about 200 kilometers.
   两座城市之间的距离大约是200公里。
2. 2.The distance block can be used to measure the distance between two points on a map.
   距离块可以用来测量地图上两点之间的距离。
3. 3. The distance block was designed to prevent people from getting too close together during the pandemic.
   距离块设计用来在疫情期间防止人们过于接近。