人生是一场睡眠，爱情是其中的梦。

The most credible empirical research often comes from studies that have a clear and transparent design, where the assumptions are laid out for everyone to see.

行人似乎永远没有意识到他们对于汽车的安全而言是一种威胁。

科学是一种探索和理解世界的方式。