政策辩论应以严格的实证分析为基础。
The trees are our elders, and they have much to teach us.
企业的成功离不开对未来的准确判断，离不开对机遇的把握。
The study of automorphic forms is a reflection of the depth of mathematical thought.
Quantum cryptography doesn't rely on the difficulty of mathematical problems, but on the fundamental laws of physics.