蒙昧

例句：

1. 1. The villagers were still living in a state of primitive ignorance.
   村民们仍然生活在原始无知的状态中。
2. 2. The child was unsophisticated and had never seen a computer before.
   这个孩子很天真，从未见过电脑。
3. 3. The scientist's research uncovered the secrets of nature, but it also revealed the limitations of human knowledge.
   科学家的研究揭示了自然界的秘密，但也暴露了人类知识的局限性。