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今天的英文翻译：
In time for spring, Mercedes-AMG is extending its sports car portfolio with the new AMG GT S Roadster as an attractive open-air model. With this latest addition the AMG GT family now has a dozen members: four two-door Coupés, three Roadsters, two customer sports racing cars and three four-door Coupes.
单词
portfolio
英 [pɔːt'fəʊlɪəʊ] 美 [pɔrt'folɪo]
n. 公文包；文件夹；证券投资组合；部长职务
复数 portfolios
roadster
英 ['rəʊdstə] 美 ['rodstɚ]
n. 跑车，双人座敞篷汽车；流浪者
coupe
英 [ˈku:peɪ] 美 [ˈkuˈpe]
n. 小轿车；双座四轮轿式马车
n. (Coupe)人名；(英)库普
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