Until recently, scientists believed that life on other planet was just a hopeful dream.
直到最近，科学家们还认为其他星球上的生命只是一个充满希望的梦。
Third, Einstein believed very deeply that scientists must have a moral and social consciousness.
第三，爱因斯坦深信科学家必须具有道德和社会意识。
Third, Einstein believed very deeply that scientists must have a moral and social consciousness.
第三，爱因斯坦深信科学家必须具有道德和社会意识。
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