noun🔗Share半圆，半圆形 Half of a circle."The rainbow appeared as a series of colorful semicircles in the sky after the rain. "雨后，天空中出现了一道道彩虹，看起来像一系列彩色的半圆形。mathpartChat with AIVocabulary GamePractice Reading
noun🔗Share半圆仪, 量角器 An instrument for measuring angles."The surveyor used two semicircles to measure the angles of the land. "测量员用了两个半圆仪来测量这块土地的各个角度。mathtechnicaldeviceChat with AIVocabulary GamePractice Reading
