Protractor
01
量角器, 分度规
a measuring instrument used to measure and draw angles
例子
The teacher used a protractor to show how to measure angles in the geometry lesson.
老师在几何课上用量角器演示如何测量角度。
To build the frame correctly, the carpenter needed a protractor to check the angle between the two beams.
为了正确构建框架，木匠需要一个量角器来检查两根梁之间的角度。
