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来源:雅诚德英语网
Its authors said they were deeply concerned about the state of NASA's science research, and made a number of recommendations.
报告的作者说,他们对NASA 的科学研究状况深感担忧,并提出了很多建议。
Its authors said they were deeply concerned about the state of NASA's science research, and made a number of recommendations.
报告的作者说,他们对NASA 的科学研究状况深感担忧,并提出了很多建议。