因果关系的阶梯有三个梯级：观察、行动和想象。
Music makes people come together.
The truth is rarely pure and never simple.
"The future belongs to those who can harness the power of data."
过去是一个外国；他们在那里做事的方式不同。
Records are there to be broken.
The concept of law is a complex one, involving not only rules but also principles, policies, and standards.