“半圆形”的英语可以翻译为：half round，arch，hemicycle，semicircle ...

“半圆形”的拼音为：bàn yuán xíng...

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....