可持续采石不是选择,而是我们对后代的责任。
Sustainable quarrying isn't an option; it's our obligation to future generations.
The young do not know enough to be prudent, and therefore they attempt the impossible, and achieve it, generation after generation.
明天的种子就种在今天的研究中。
普惠金融不是慈善事业,而是可持续的商业模式。