Since that's all been pushed out of the way by development, that means the food has to get shipped in from larger distances.

之后由于发展建设,耕地都不见了,这意味着食物要从相当遥远的地方运过来

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Here it is not just the venerability of slavery, how old it is, but it's the idea that it has been crucial to the development of all great civilizations.

不仅仅讨论奴隶制的庄严性与历史由来,更是它曾经对人类文明的发展,起过至关重要的作用

耶鲁公开课 - 美国内战与重建课程节选