习俗并非任何协议或契约的结果,而是长期发展过程的产物,在此过程中它们适应了社会的生活条件。
价值链是通过其创造并将产品或服务交付给客户的一系列活动。
The market can stay irrational longer than you can stay solvent.
The most sustainable leather is the one that lasts the longest, reducing the need for frequent replacements.