Science demands from a man all his life.
科学要求一个人付出他的一生。
编辑是一项改写活动。
明智的艺术就是知道要忽略什么。
让儿童参与工作,能增强他们对生活环境的责任感。
Sustainable mining isn't an option anymore - it's our responsibility to future generations.
Fear is the most powerful weapon in the world.