制革厂的废水是其价值观最真实的衡量标准。
A tannery's wastewater is the truest measure of its values.
If we treat the ocean as a limitless resource, we will soon find it is anything but.
人世间的罪恶几乎总是由愚昧无知造成，如果缺乏理解，好心能造成和恶意同样大的危害。
Sustainability isn't an option; it's a responsibility we owe to future generations.
The individual's biography is shaped by the historical and social context in which it is embedded.
当有疑问时，使用蛮力。