短語(yǔ)詞組短語(yǔ)equilateral E polygon 等邊多邊形equilateral semiregular polygon 等邊半正多邊形equilateral polygon equilateral 正多邊形equilateral semiregular concave polygon 等邊半正凹多邊形spherical equilateral polygon joint 球麪等邊多邊形拼接equilateral polygon metric space 度量空間 返回 equilateral polygon