semicircular array的用法和樣例：
例句
- A lectern and platform were set up on the east side, facing an array of seats arranged in a semicircle.
廳的東側設置了主席台和講台，面對講台排列著呈半圓形的一排排座位。 - These are stone benches arranged in rows, which give the semicircular bowl-shape of the theatre a corrugated surface.
這些長條型的石凳整齊的排列著，在半圓形碗狀的劇院內形成波浪型的表面。
