convex

凸的、凸面的、外凸的

The lens has a convex surface that bends light inward.

这片镜片有凸面，能把光线向内折射。

凸的数学

A convex set contains every line segment between its points.

凸集包含其中任两点之间的所有线段。

凸面、凸形少用

The mirror's gentle convex made distant objects look smaller.

镜子微微的凸面让远处的物体看起来变小了。