collabral造句

例句与造句

1. The family lived from the upper Cambrian to middle Permian and the shells are characterized by a relatively small median sinus in the upper margin of the aperture, and collabral ( transverse ) or spiral ( longitudinal ) threads covering the spire as is the case with most shelled gastropods.
2. It's difficult to find collabral in a sentence. 用collabral造句挺难的