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单词 doughnut
释义 doughnut
n. (US donut)
  1. a small fried cake of sweetened dough, usu. in the shape of a ball or ring.
  2. a ring-shaped object, esp. Physics a vacuum chamber for acceleration of particles in a betatron or synchrotron.
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更新时间:2025/3/10 15:07:42