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这是真正的“空中”教室，他们在宇宙空间站接受学生来自地球的提问"In fact, one way to think about that when we're on the International Space Station and all the lights are on when we look outside, i...

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科学家正在进行异形蚊子在抵御疟疾病流行的研究Marcelo Jacobs-Lorena is with the Malaria Research Institute at Johns Hopkins University in Baltimore, Maryland. Jacobs-Lorena says investigators creat...