句子翻译练习 2. With the present rate of growth of ideas and plans of both physicists and engineers it is no longer possible to allow the development of the full potentialities of the new metals to evolve over a period of about fifty years, as was the case with aluminum in the period between 1890 and 1949www.themegallery.com 句子翻译练习 2. With the present rate of growth of ideas and plans of both physicists and engineers, it is no longer possible to allow the development of the full potentialities of the new metals to evolve over a period of about fifty years, as was the case with aluminum in the period between 1890 and 1949