semicircles

1. 1.

   A half of a circle.

   半圆；圆的一半。

2. 2.

   a plane figure with the shape of half a circle

   半圆形的平面图形

3. 3.

   A surveyor's instrument for measuring angles; a graphometer.

   测量员用于测角的仪器；测角器。

4. 4.

   An arc whose center is the penalty spot, extending from the top of the penalty area.

   以罚球点为圆心、从罚球区顶部延伸出的弧线。

半圆形的平面图形；测量员用于测角的仪器；测角器。；以罚球点为圆心、从罚球区顶部延伸出的弧线。；半圆形

Connections

Learner notes