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The separation of law and morals is a necessary feature of a legal system.
法律与道德的分离是法律体系的一个必要特征。
Sustainability is not just about technology, it's about creating a whole new ecosystem.
Letters are the biographer's gold mine; they reveal what official records conceal.
我们每天可支配的时间是弹性的;我们感受到的激情会扩展它,我们激发的激情会收缩它。