In the meantime, what the surface is differred into a thickness by decency is cortical, such, emerald shiver becomes the approximate circle that wraps by cortical bag or elliptic gravel.

• 同时，表面被风化成一层厚薄不等的外皮，这样，翡翠碎块就变成由外皮包裹的近似圆形或椭圆形的砾石了。