Sustainability is not an option; it's a necessity for the future of agriculture and food production.
可持续性不是一种选择；它是农业和食品生产未来的必需品。
The dead are always looking down on us, they say. But we don't look back.
每一幅充满感情的肖像画都是艺术家的自画像，而不是模特的。