“半圆形”造句

他们围着老师的椅子站成半圆形回答问题。
They stood in a semi-circle round the teacher's chair and answered questions.

摆成半圆形的椅子
a semicircle of chairs

这个村庄是由半圆形的茅舍组成的.
The village was formed of semicircle huts.