The distinction between law and morality is a fundamental one in legal philosophy.
If ease of use was the only requirement, everyone would still be riding tricycles.
石油化工的未来在于可持续性和高效性。
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。
预测未来的最好方法就是发明它。