除第一次外，所有内容均应自上而下构建。

Quantum cryptography doesn't rely on the difficulty of mathematical problems, but on the fundamental laws of physics.

他的花朵曾经告诉他，自己是宇宙间仅有的一种花；可是仅仅在这座花园里，就有五千朵和她一模一样的花！

最成功的企业是那些将利润与目标结合的企业。

The eagle never lost so much time as when he submitted to learn of the crow.

光是建筑的魔术师。