您要查找的是不是：
- 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。
- My wages are the principal source of my income. 薪金是我收入的主要来源。
- The principal shareholder ask for a meeting. 主要股东们要求召开会议。
- The agent spoke on behalf of his principal. 代理人代表他的委托人说话。
- Keys are available on application to the principal. 向校长申请就可得到钥匙。
- The new grinding machine passed all tests. 这台新磨床通过了所有的试验。
- She's been downgraded (from principal) to deputy. 她已(从校长)降为副校长。
- Our principal problem is lack of time. 我们的主要问题就是缺少时间。
- Oil feeds into the machine through this tubing. 油经过这个管子流入机器。
- Did you get a good trade-in on your sewing machine? 你以旧缝纫机折价换新合算吗？
- She drank in every word of the principal's lecture. 她全神贯注地听校长演讲的字字句句。
- John informed the principal against Paul. 约翰向校长告发了保罗。
- 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。
- The central or principal vein of a leaf. 中脉中心的或主要的叶脉
- Just press the button and the machine will start. 只要一按电钮，机器就会开动。
- The principal discouraged unexcused absences. 校长不准无故缺课。
- The machine cast up a big heap of earth. 机器卷起了一大堆泥土。
- Rubber is the country's principal export. 橡胶制品是该国主要的出口产品。
- 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。
