During the Song and Yuan Dynasties the bronze mirrors appeared in all shapes: round, rectangular, rhomboidal, octagonal, and those with a handle.
宋，元时期出现了圆镜，长方镜，菱镜，八棱镜和带柄手镜等。
These cells are filled with starch grains as well as mostly one and sometimes 2 to many rhomboidal or square shaped protein crystalloids, but lipid is seldom seen.
细胞内充满淀粉粒和通常一颗亦有2至多颗菱形或方形蛋白质晶体，脂类物质极少。
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