对于你所拥有的,要心存感激,这样你就会拥有更多。对于你所没有的,如果不停强调,你永远都不会满足。
In business, as in life, relationships are the foundation of everything.
柠檬问题是指买家无法确定产品质量,因此只愿意支付反映平均质量的价格。
Chemistry is the central science that connects physics and biology.