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。
- They detected no defect in the product. 他们没发现产品有任何问题。
- The principal shareholder ask for a meeting. 主要股东们要求召开会议。
- This was his fatal defect; he was of feeble will. 这是他致命的弱点，他意志薄弱。
- 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。
- A defect of focus, such as blurring in an image. 像差焦点不准确而造成的物像模糊
- Near-sightedness is a visual defect. 近视是一个视力缺陷。
- 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 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。
- Rubber is the country's principal export. 橡胶制品是该国主要的出口产品。
- A defect in the fuel lines prevented the missile from blasting off. 燃料管路上的一个缺陷妨碍了导弹的发射。
- The principal has a very tight schedule. 校长的日程表排得满满的。
- In other cases, water was in excess, and fire in defect. 至于其它的情形则是水分太多，火候不足。
- Our school gave a reception to our new principal. 我们学校为新校长举行了欢迎会。
- The principal knew all the students individually. 校长认识每个学生。
