可持续性不再是一个选择;它是乳制品农业未来的必需品。
Sustainability is no longer an option; it's a necessity for the future of dairy farming.
模型的目的是足够简单以便理解和使用,但又足够复杂以捕捉系统的基本特征。
"The simplest stories often have the deepest meanings."
"A life without reflection is a life half-lived."
应对不自由世界的唯一方式,就是让自己彻底自由,以至于你的存在本身就是一种反抗。