例句與造句

1. Some of the major layers within the group exposed in the Picture Gorge district are the Big Basin Formation and Bridge Creek Beds ( 35 to 32 million years ), the Turtle Cove Formation ( 30 to 28 million years ), the Picture Gorge Ignimbrite ( 28.7 million years ), the Kimberly Formation ( 28 to 25 million years ), and the Haystack Formation ( 25 to 18 million years ).
2. It's difficult to find turtle cove formation in a sentence. 用turtle cove formation造句挺難的