In mathematics, the art of proposing a question must be held of higher value than solving it.
景观研究是对自然与人类文化相互作用的研究。
民兵的基本法是,它由法律创建、指导和指挥,永远为支持法律而存在。
The rise of China and the resurgence of Russia have challenged the idea that liberal democracy is the only viable form of government.