您要查找的是不是：
- My wages are the principal source of my income. 薪金是我收入的主要来源。
- The pedal of a cycle is attached to a crank. 自行车的踏板与曲柄相连。
- 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。
- 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。
- It's easier to cycle with the wind behind you. 顺风骑车省力。
- A unit of frequency equal to one cycle per second. 赫兹频率的单位，等于每秒一周
- 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。
- The seasons of the year make a cycle. 一年四季构成一个循环。
- The business cycle experienced a sudden down. 商业周期经历了突然的萧条。
- The central or principal vein of a leaf. 中脉中心的或主要的叶脉
- This is the cycle of economic booms and slumps. 这是经济繁荣和经济萧条的周期变化。
- The principal discouraged unexcused absences. 校长不准无故缺课。
- Cycle across America? Sounds a bit dodgy to me. 骑自行车横越美国? 听起来有些冒险。
- Rubber is the country's principal export. 橡胶制品是该国主要的出口产品。
- The pedals of a cycle are attached to a crank. 自行车的踏板与曲柄相连。
- The principal has a very tight schedule. 校长的日程表排得满满的。
