A doughnut is a round piece of fried dough with a hole in the middle or filled with cream or jelly.

VOA: special.2010.04.12

Yeah because I--it's like fried dough isn't it?

是的,因为它类似油炸面团

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选