例句與造句

1. Framework silicates, or tectosilicates, have tetrahedra that share all four corners.
2. These frameworks are composed of tectosilicates.
3. Tectosilicates are built on a framework of tetrahedra with silicon or aluminium at the centre and oxygen at the vertices; they include feldspars and zeolites, but leifite does not belong in either of these categories.
4. It's difficult to find tectosilicates in a sentence. 用tectosilicates造句挺難的