Sustainability is no longer an option; it's a necessity for the future of leather tanning.
I want to run a good race and inspire many people.
Agriculture is the foundation of manufacture and commerce.
The real is always mediated through the symbolic.
形式化方法的美在于它们能够提供关于系统行为的绝对保证。
"Every life has a moment that defines it, a moment when everything changes."