您要查找的是不是：
- yarn examining machine 摇黑板机
- The beggar spun a long yarn about his misfortunes. 那个乞丐编造了一大篇自己如何遭遇不幸的故事。
- 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。
- They pitched a yarn about finding the jewels. 他们编了一个找到宝石的故事。
- Research workers are examining the problem. 研究人员正在研究那个问题。
- Mr Robert has been examining his house for cracks. 罗伯特先生在检查他的房子，看看是否有裂缝。
- The new grinding machine passed all tests. 这台新磨床通过了所有的试验。
- He was examining the stamps intently. 他正在聚精会神地细看邮票。
- The woman knits stockings from yarn. 那妇人用纱线织袜子。
- Oil feeds into the machine through this tubing. 油经过这个管子流入机器。
- Spindle is the measure for yarn. 司品德是纱的度量单位。
- Did you get a good trade-in on your sewing machine? 你以旧缝纫机折价换新合算吗？
- Mother used to spin her own yarn. 母亲过去一直是自己纺纱的。
- Wool fibers can be spun into yarn. 羊毛纤维可纺成纱。
- 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 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。
- 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。
