a small, round doughnut (= a circular cake fried in hot fat), often made from the part cut out of the middle of a larger, ring-shaped doughnut

There is a chocolate fountain with strawberries, doughnut holes, marshmallows, and pretzels for dipping. 这里有一个巧克力喷泉，还有草莓、甜甜圈球、棉花糖、椒盐饼可以蘸着吃。

for people on a particular kind of Medicare plan for prescription drugs (= ones that can only be bought if a doctor orders them for you), the fact of having to pay for a drug because its cost is between two levels at which the cost will be paid by their plan

The doughnut hole is the gap in coverage when Part D members reach $2,250 in prescription costs. 甜甜圈漏洞指的是D部分投保人员处方费用达到2250美元时的保障缺口。

The former congressman said his group had made several proposals to Congress for shrinking the doughnut hole. 这位前国会议员说，他的团体已经向国会提出了几个缩小“甜甜圈漏洞”的建议。