例句與造句

1. Lead had traditionally been found by following veins from surface outcroppings, particularly in " rakes " or vertical fissures.
2. Surface outcroppings of the Thermopolis Shale occur in central Canada, and the U . S . states of Montana and Wyoming.
3. The surface outcropping of the Cottonwood Limestone is easily traced in the Flint Hills south of the Kansas River and east of Manhattan, Kansas.
4. It's difficult to find surface outcroppings in a sentence. 用surface outcroppings造句挺難的