synclinal hydrocarbon reservoir

例句：

1. 1. The synclinal trough is a region of low-lying land that has been erodedby the river.
   这个同斜谷是一片低洼地区，被河流侵蚀。
2. 2.The synclinal fold is a typeof fold that forms in areas where theEarth's crust is thin and weak.
   同斜褶皱是一种褶皱类型，形成于地壳薄而弱的区域。
3. 3. The synclinal fault is atype of fault that occurs along the boundarybetween two tectonic plates.
   同斜断层是一种发生在两个构造板块边界上的断层类型。