It is directed against Canaanites only, not all non-Israelites, for a very specific reason: religious purity.

这只指迦南人，而不是所有以色列人之外的人，有一个明确的原因，宗教圣洁。

耶鲁公开课 - 旧约导论课程节选

So if a food belongs to a class of foods that a class of items that contributes to that internal metabolic havoc, would that be reason to consider it a non-food?

如果某种食物,可以引起机体内代谢紊乱,将它们认定为非食品是否合理呢

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Even if there is an immortal soul-- Sorry. Even if there is a non-physical soul that's part of me, we don't yet have any reason to believe that it's one of the fundamental building blocks that were being recycled.

即使灵魂是不灭的,不对,即使有个非现实的灵魂是我的一部分,我们并没有任何理由去相信,灵魂是被循环利用的,基本组成部分之一

耶鲁公开课 - 死亡课程节选