the basic monetary unit of the US, Canada, Australia, and certain countries in the Pacific, Caribbean, SE Asia, Africa, and South America
美元;元(美国、加拿大、澳大利亚及位于太平洋、加勒比海、东南亚、非洲和南美一些国家的基本货币单位)。
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dollars to doughnuts N. Amer. informal used to emphasize one's certainty 〈北美,非正式〉 绝对的,肯定的I'd bet dollars to doughnuts he's a medical student . 我敢打赌,他肯定是个医科学生
"from early Flemish or Low German