adjacent curves in one direction

例句：

1. 1. The two buildings are adjacent to eachother.
   这两栋建筑是相邻的。
2. 2. Theriver is adjacent to the city center.
   这条河与市中心相邻。
3. 3. The two countries areadjacent to each other.
   这两个国家是相邻的。