| 词汇 | protractor |
| 释义 | protractor/prəˈtræktə(r) ||; prəˈtræktɚ/noun [c] an instrument for measuring and drawing angles, usually made from a half circle of clear plastic with degrees (0° to 180° marked on it 量角器；分度规 pro·trac·tor /pro`træktə; prəˈtræktə/n [c]a flat object shaped like a half circle, used for measuring and drawing angles 量角器，分度规 |
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