The great powers are always searching for opportunities to gain power at the expense of rivals, and to dominate the system.
The secret of all effective advertising is not the creation of new and tricky words and pictures, but one of putting familiar words and pictures into new relationships.
地球是一个动态的行星，其内部热量是地质变化的驱动力。
在研究自然时，想象力必须受到逻辑和实验的严格规则指导。
Love is a battlefield, but it's a battlefield worth fighting for.
