isthmus gyri cinguli

例句：

1. 1.The isthmus connects two countries.
   这个海峡连接了两个国家。
2. 2. The isthmus is a popular tourist destination.
   这个海峡是一个受欢迎的旅游目的地。
3. 3. The isthmus is home to many species of fish and sea creatures.
   这个海峡栖息着许多鱼类和海洋生物。
4. 1. The gyri are covered in lush greenery.
   这些山脊覆盖着郁郁葱葱的植被。
5. 2.The gyri are the perfect place for hiking and camping.
   这些山脊是徒步和露营的理想之地。
6. 3. The gyri are visible from space.
   这些山脊在太空中可见。
7. 1. The cinguli on her neck are very pronounced.
   她脖子上的颈褶非常显眼。
8. 2. The cinguli on her neck were caused by an injury.
   她脖子上的颈褶是由一次受伤造成的。
9. 3. The cinguli on her neck are visible when she smiles.
   当她微笑时，她脖子上的颈褶是可见的。