| 单词 | doughnut | 
| 释义 | doughnut/ˈdəʊnʌt / (US also donut)  noun 1A small fried cake of sweetened dough, typically in the shape of a ball or ring.The menu mentioned toasted teacakes, scones, doughnuts, Danish pastries and flapjack.... 
 1.1A ring-shaped object, in particular a vacuum chamber in some types of particle accelerator.Joining the remaining pair of sides turns the cylinder into a doughnut, or torus (right).... 
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