您要查找的是不是：
- primitive pushdown machine 原始下推机
- The machine must break down at this busy hour. 正忙的时候，机器偏偏又坏了。
- The uses of this machine are manifold. 这台机器有多种用途。
- 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。
- The new grinding machine passed all tests. 这台新磨床通过了所有的试验。
- 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。
- Oil feeds into the machine through this tubing. 油经过这个管子流入机器。
- 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。
- Did you get a good trade-in on your sewing machine? 你以旧缝纫机折价换新合算吗？
- A primitive hand-turned grain mill. 手推磨一种原始的手推碾谷磨
- You may stop the machine by pushing this button. 按下这个按钮你就可以关掉这个机器。
- Just press the button and the machine will start. 只要一按电钮，机器就会开动。
- The book is about the mythologies of primitive races. 这本书是原始民族神话集。
- The machine cast up a big heap of earth. 机器卷起了一大堆泥土。
- The machine feeds back everything you need to know. 这架机器可以把你所需要知道的全部材料再提供出来。
- 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
- The machine is used to rip up the documents. 这台机器使用来搅碎旧布并为织出新布提供纤维的。
- Small seashells were often used as a primitive kind of money. 小贝壳常被用作简单的货币。
