人是一种做交易的动物，没有其他动物会这样做，没有狗会和另一只狗交换骨头。
Man is an animal that makes bargains: no other animal does this no dog exchanges bones with another.
The mining industry must evolve with sustainability at its core, or we risk becoming obsolete.
The debate isn't 'coal vs. renewables'—it's how to integrate both during the transition.
解释：才华有高下之分，没有古今之别；文章有真实、虚伪之差，没有新旧之异。