noun🔗Share半円Half of a circle."The rainbow appeared as a series of colorful semicircles in the sky after the rain. "雨の後、虹は空に一連のカラフルな半円として現れました。mathpartChat with AIVocabulary GamePractice Reading
noun🔗Share分度器, 半円An instrument for measuring angles."The surveyor used two semicircles to measure the angles of the land. "測量士は土地の角度を測るために、2つの分度器を使用しました。mathtechnicaldeviceChat with AIVocabulary GamePractice Reading
