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 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。
- The beer comes out of the barrel under pressure. 啤酒受到压力从桶中流出。
- Our pressure vessel is licensed product. 我厂生产的压力容器是授权生产产品。
- 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。
- Loss of pressure had not registered on the dials. 刻度盘未记录压力下降。
- John informed the principal against Paul. 约翰向校长告发了保罗。
- Air pressure forces the water through the pipe. 空气压力使水通过管道。
- The central or principal vein of a leaf. 中脉中心的或主要的叶脉
- The principal discouraged unexcused absences. 校长不准无故缺课。
- What's the atmospheric pressure today? 今天的气压怎么样？
- Rubber is the country's principal export. 橡胶制品是该国主要的出口产品。
- The principal has a very tight schedule. 校长的日程表排得满满的。
- The water pressure may need adjusting. 水压可能需要调整。
- Our school gave a reception to our new principal. 我们学校为新校长举行了欢迎会。
- Pressure is force per unit area. 压力就是电单位面积上的力。
