The world needs reliable energy, and coal still plays a critical role in providing it.
世界需要可靠的能源，而煤炭仍然在其中发挥着关键作用。
The study of consciousness must be free from all metaphysical influences.
The young do not know enough to be prudent, and therefore they attempt the impossible – and achieve it, generation after generation.
The most important thing is to keep the audience engaged.