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stud.y5stQd7in [C]研究A congressional budget-office study puts the total cost of the war to the US at $42 billion.国会对预算局的研究表明美国这场战争费用总计达420亿美元。Some studies have suggested a link between certain types of artificial sweetener and cancer.一些研究表明某些种类的人造甜味剂可能致癌。A study is also a drawing which an artist makes so they can test ideas before starting a painting of the same subject.试画
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