primitive/ˈprɪmɪtɪv/
adj.1. 原始的；远古的Primitive men lived in caves.原始人住在山洞里。
Primitive man made tools from sharp stones and animal bones.原始人用尖石块和动物的骨制造工具。
2. 古老的；旧式的；简单的The native of that region still live in primitive straw huts.那个地区的居民依然住在古老的茅草屋里。
Small seashells were once used as a primitive kind of money.小贝壳曾经被用作简单的钱币。