The anarchic nature of the international system means that states must rely on self-help to ensure their survival.
国际体系的无政府性质意味着国家必须依靠自助来确保其生存。
I don't want to be a hero. I want to be a human.
The only way to learn a new programming language is by writing programs in it.
遗传密码的美在于它的普遍性;它被所有已知的生命形式共享。
不自律的人是没有自由的。