例句與造句

1. The grave ditch was described as partially flat, partially trough shaped.
2. These deposits can usually be recognized by the abundance of pyrite rich fossilized wood, and usually form as trough shapes.
3. The intrusion is a tilted trough shaped body with an exposed length of and a thickness or original vertical dimension of over.
4. It's difficult to find trough shape in a sentence. 用trough shape造句挺難的