树木有根则繁茂,根腐则树枯萎;鱼有水才能活,水干涸了鱼则必死;灯有油才光亮,油尽则灯灭。人有真精神,保护则长寿,戕害则必死。
可持续性不是一种选择;它是农业未来的必要条件。
I’ve always been attracted to the idea of a voice that is absolutely authoritative and yet absolutely humble.