primitive people

基本解释

The history of advanced races meeting more primitive people on this planet is not very happy, and they were the same species.
在地球上先进种族与更为原始的种族相遇的历史并不十分愉快，而且相同的人种尚且如此，更何况与我们不同的外星生命呢。
Yet people dismiss such myths as lies created by primitive people who lack scientific knowledge -- or as lies created by people who haven't found the true religion.
然而，人们往往把这些神话归结为缺乏科学知识的原始人——或者没有发现真正宗教的人所创造的谎言来加以排除。
Primitive people often lived in caves.
原始人常常住在山洞里。

Consider that in the late 1990s when I wrote these predictions there was no Wikipedia, no social networks, no blogs, very primitive search engines that few people used, no usable language tools, very primitive and expensive mobile phones, and so on.
FORBES: Ray Kurzweil Defends His 2009 Predictions
You know, the kinds of gadgets you'd love to travel with into the past simply to blow people's primitive minds.
ENGADGET: IRL: ASUS Transformer Prime, Verbatim Dual USB Power Pack and V-Moda's Crossfade LP headphones
Splitting is a primitive psychological defense mechanism used to make difficult people in our lives seem all good, or all bad, as needed.
FORBES: Trump's TV Negativity: Do Not Try This On Your Own.