The concept of a legal system presupposes the concept of a rule.

In business, the biggest risk is not taking any risk.

科学的美丽在于它不断发展和挑战我们对世界的理解的能力。

The best performance improvement is the transition from the nonworking state to the working state.

如果你尊重纸的特性并相应设计，纸也可以是永久的。

煤炭开采的创新不仅仅是关于开采，而是更智能、更安全、对环境的影响更小。