例句與造句

1. The "'Nugget Sandstone "'is a Mesozoic geologic formation in the western United States.
2. As the Triassic gave way to the Jurassic, wind spread salmon-red colored sand across the red beds of the Chugwater Formation to form the Nugget Sandstone.
3. It's difficult to find nugget sandstone in a sentence. 用nugget sandstone造句挺難的