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词汇 protractor
释义
protractorpro·trac·tor /proʊˈtræktər ; prəˈtræktər /

noun

[countable]
(mathematics数学) an instrument for measuring and drawing angles, usually made from a half circle of clear plastic with degrees ( to 180°) marked on it量角器;分度仪
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更新时间:2026/6/23 20:52:22