The mining industry must evolve to meet the demands of a changing world.
没有道德或不道德的书,只有写得好或写得差的书。
If you're not failing, you're not pushing your limits, and if you're not pushing your limits, you're not maximizing your potential.
物理学的魅力在于它能够用简单的原理解释复杂的事物。
真正的文学是使我们更加人性的文学。