每个人都有不为世人所知的秘密悲伤;很多时候,我们称一个人冷漠,而他只是悲伤。
Sustainable quarrying isn't an option; it's our obligation to future generations.
The moment eternal—just that and nothing more.
可持续性不是潮流,而是我们行业生存的必需。
Innovation is the key to sustainable agriculture.