semicircular
adjective uk/sem.iˈsɜː.kjə.lər/ us/sem.iˈsɝː.kjə.lɚ/
半圆的
shaped liked a half circle
The chairs were placed in a semicircular arrangement. 椅子被摆成了半圆形。
Fluid moves in the semicircular canals within the bony labyrinth of the inner ear. 液体在内耳骨质迷路的半圆形小管内流动。