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来源:雅诚德英语网
There is considerable and justified concern that the United States is falling behind much of the rest of the developed world in these essential disciplines.
人们有合理正当的理由担心,美国在这些基本学科上落后于其他许多发达国家。
There is considerable and justified concern that the United States is falling behind much of the rest of the developed world in these essential disciplines.
人们有合理正当的理由担心,美国在这些基本学科上落后于其他许多发达国家。