Safe, it is the mankind is on industrialized viatic a lasting theme.
安全，是人类走上工业化道路的一个永恒的主题。
Education quality is the lifeline of running a school and the lasting theme of education.
教育质量是办学的生命线，是教育永恒的主题。
Education quality is the lifeline of running a school and the lasting theme of education.
教育质量是办学的生命线，是教育永恒的主题。
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