The international system is inherently competitive, and states are constantly trying to outmaneuver each other.
哪里有自由,哪里就是我的祖国。
互联网是一种工具,可以用于善或恶,取决于我们如何使用它。
Without food, man can live at most but a few weeks; without it, all other components of social justice are meaningless.
学习的最佳方式是教授。