brachygeosyncline

例句：

1. 1. The earthquake caused the crust to fold into a brachygeosyncline.
   地震导致地壳褶皱成一个狭长褶皱地壳。
2. 2.The geoscientist discovered an unusually deep brachygeosyncline in the ocean floor.
   地质学家在海底发现了一个异常深的狭长褶皱地壳。
3. 3. The seismic activity in this region is often associated with the brachygeosyncline.
   该地区的地震活动常常与狭长褶皱地壳有关。