柯林斯詞典semicircle /?s?m??s??k?l/ (also semi-circle) (semicircles) 1. N-COUNT A semicircle is one half of a circle, or something having the shape of half a circle. 半圓 (形) They sit cross-legged in a semicircle and share stories. 他們盤著腿圍成半圓坐在一起講故事。 返回 semicircle劍橋詞典half a circle 半圓 We arranged the chairs in a semicircle. 我們把椅子擺成半圓形。 返回 semicircle