无论我们观察到多少只白天鹅，都不能证明所有天鹅都是白色的。
Sustainability is not an option—it's a responsibility we owe to the next generation.
Science progresses not just by answering questions, but by asking better ones.
法律是一种反映社会价值和规范的社会现象。
煤炭技术的创新与其他能源领域的创新同样重要。
"In the study of computational complexity, we often find that the boundaries of what is possible are defined by the limits of our imagination."
对知识的追求是无止境的，而这正是它令人兴奋的地方。
The novel is a mirror that reflects the complexities of human nature.