protractor
🇺🇸
/prəˈtræktər/
🇬🇧
/prəˈtræktə(r)/
noun
R
A tool used to measure angles or to draw straight lines.
Using a protractor, she accurately measured the angle of the roof.
使用量角器，她准确地测量了屋顶的角度。
translation
量角器
词形变化
Plural
protractors