Read Edit View history 凸凸 tūtū biconvex Origin Definitions Defs Strokes Stroke Words Sentences Sents 凸凸 tūtū biconvex descriptive convex on both sides, especially relating to an optical lens Sources Definitions CC-CEDICT
凸凸 tūtū biconvex descriptive convex on both sides, especially relating to an optical lens Sources Definitions CC-CEDICT