relating to human society at a very early stage of development, with people living in a simple way without machines or a writing system

Primitive races colonized these islands 2,000 years ago. 原始种族2000年前开拓了这些岛屿。

primitive man 原始人

The spiny anteater is a mammal, although a very primitive one. 针鼹属于哺乳动物，尽管是非常原始的一种。

Primitive living conditions are basic, unpleasant, and uncomfortable.

Early settlers had to cope with very primitive living conditions. 早期殖民者不得不应付非常原始的生存条件。