protractor
noun [ C ] uk/prəˈtræk.tər/ us/prəˈtræk.tɚ/
量角器;分度规
a device used for measuring and drawing angles. It is usually in the form of half a circle made from transparent plastic with degrees printed on it.
江苏热线英汉汉英双解词典包含207361条英汉翻译词条,涵盖了常用英语单词及词组短语的翻译及用法,是英语学习的必备工具。