pertica quadrifaria造句

例句与造句

1. "Pertica quadrifaria " ( the type species of the genus ) was described in 1972 from compression fossils found in the Trout Valley Formation of northern Maine, USA . It was an upright plant which grew to perhaps as much as a metre ( 3 ft ) in height.
2. It's difficult to find pertica quadrifaria in a sentence. 用pertica quadrifaria造句挺难的