您要查找的是不是：
- primitive parallelogram of period 周期的原始平行四边形
- primitive parallelogram 原始平行四边形
- His art is primitive and provincial. 他的艺术原始而粗野。
- Primitive people often lived in caves. 原始人常常住在山洞里。
- Primitive peoples deified the sun. 原始部落将太阳奉为神。
- They built a primitive shelter out of tree trunks. 他们用一些树干建造了一个简陋的棚子。
- 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。
- A primitive hand-turned grain mill. 手推磨一种原始的手推碾谷磨
- The book is about the mythologies of primitive races. 这本书是原始民族神话集。
- Primitive in culture and customs; uncivilized. 野蛮的，未开化的文化和习惯原始的; 不文明的
- Small seashells were often used as a primitive kind of money. 小贝壳常被用作简单的货币。
- Living conditions in the camp were pretty primitive. 营地的生活条件甚为原始。
- These are the opposite sides of the parallelogram. 这是平行四边形的对边。
- They can be combined into a parallelogram . 生：可以拼成一个平行四边形。
- He will publish his observation on the social life of these primitive tribe. 他将公布他对那些原始部落的社会生活观察所得的资料。
- Given that OABC is a parallelogram. 已知OABC为一平行四边形。
- Ok, a parallelogram box, but a box nonetheless! 好吧，一个平行四边形框，但尽管如此，一个盒子！
- A piece of flint used as a tool by primitive human beings. 打火石原始人作为工具用的一块打火石
- Can you make a parallelogram with them? “想想做做”第5题）你能用它们拼出你认识的图形吗？
- The constitution of a primitive society is not necessarily simple. 原始社会的结构并不一定就是简单的。
