Now there are challenges to a plant based diet which made eating meat important to humans in human history.

在人类历史上,以素食为主的饮食方式面临各种挑战,使得进食肉类变得重要

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Then going from a plant based diet to a diet that included meat.

人类的饮食由植食性发展为含肉类的饮食

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Now that seems counterintuitive now because we think that a plant based diet may be more healthy for people than a meat based diet, but remember, that we're fighting off overnutrition and these folks were fighting off undernutrition.

现在看来似乎并非如此,因为我们认为,对于人类来说,植物性饮食比以动物性饮食更为健康,但是请记住,我们正在对抗营养过剩,而这些人们正在和营养不良作斗争

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选