Sustainability is the future of quarrying, and we must act now.
可持续性是采石业的未来,我们必须立即行动。
人类行为的首要原则是,一个人会做他认为能满足自己欲望的事情。
制造业的创新是在全球市场中保持竞争力的关键。
No matter how complex or refined, all behavior is to be explained in terms of stimulus and response.
无论多么复杂或精细,所有行为都可以用刺激和反应来解释。