例句與造句

1. They form approximately 40 percent of aeolian depositional surfaces.
2. The molasse can sometimes completely fill a foreland basin, creating a nearly flat depositional surface, that nonetheless remains a structural syncline.
3. Changes in currents or physical deformation in the environment can be determined upon observation and monitoring of a depositional surface or lithologic sequence with unconformities above or below a graded bed.
4. It's difficult to find depositional surface in a sentence. 用depositional surface造句挺難的