Sustainable quarrying isn't an option; it's our obligation to future generations.
可持续采石不是选择,而是我们对后代的责任。
对不起妈妈,我从没想过要伤害你。我从没想过让你哭泣,但今晚我要清理我的衣橱。
我们在愿景上是固执的。我们在细节上是灵活的。
你必须相信你的想法,并愿意在众多挑战中坚持下去。
可持续发展的关键在于通过教育和创新不断改善人力资本。
"No man really knows about other human beings. The best he can do is to suppose that they are like himself."