柯林斯词典convex /ˈkɒnvɛks/ 1. ADJ Convex is used to describe something that curves outward in the middle. 凸面的 ...the large convex mirror above the fireplace. ...壁炉上面的大凸面镜子。 返回 convex剑桥词典curved or swelling out 凸的，凸起的 a convex lens /mirror 凸透镜／凸面镜 比较concave 返回 convex