brachy-synclinal fold

例句：

1. 1. The geological formationof the area is characterized by brachy-synclinal folds.
   该地区的地质构造特征是具有狭长褶皱。
2. 2. The study of these folds hasled to a better understanding of the tectonic history of the region.
   对这些褶皱的研究有助于更好地理解该地区的构造历史。
3. 3. The brachy-synclinalfolds are believed to have formed duringthe early stages of the Earth'scrust formation.
   据信，这些狭长褶皱是在地球地壳形成初期形成的。