| 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 |