coldwater sandstone造句

例句与造句

1. The redbeds found in the Sespe are similar to those characteristic of the Permian period, and the sudden occurrence of redbeds have been used  for example by Thomas Dibble  to demarcate the beginning of the Sespe from the end of the Coldwater Sandstone in the stratigraphic column.
2. It's difficult to find coldwater sandstone in a sentence. 用coldwater sandstone造句挺难的