Find your enemy, you will be safely!

A teacher who is attempting to teach without inspiring the pupil with a desire to learn is hammering on cold iron.

Enterprises must have the courage to take responsibility and play a leading role in energy transformation.

在量子力学的领域里，观察者和被观察者密不可分，这对我们关于现实的经典观念提出了挑战。

The dead are not dead to us until we have forgotten them.

我们必须警惕保护互联网免受那些会滥用它的人的侵害。