gyri

例句：

1. 1. The mountain range is home to many unique plant species.
   这座山脉拥有许多独特的植物物种。
2. 2. The hikers followed the ridge up the mountain.
   登山者沿着山脊爬上了山。
3. 3. The gyri of the valley are dotted with small villages.
   山谷的山脊上点缀着一些小村庄。