Semicircle
01
半圆, 半圆形
any half of a circle
例子
The children sat in a semicircle around the teacher during story time.
在故事时间，孩子们围着老师坐成一个半圆。
The architects designed the auditorium with a semicircle of seats for better acoustics.
建筑师设计了带有半圆形座位的礼堂以获得更好的音响效果。
