Torus
01
环面, 环
a solid shape resembling a donut or ring, made by spinning a circle around a line that does not cut through the circle
例子
The handle of a coffee mug is shaped like a torus, providing a comfortable grip.
咖啡杯的手柄形状像一个环面，提供了舒适的握感。
02
圆环面, 凸半圆形装饰线条
a convex, semi-circular molding or projection that is often used to ornament the base or capital of a column, providing visual interest and a decorative touch
