您要查找的是不是：
- The central or principal vein of a leaf. 中脉中心的或主要的叶脉
- This agreement will come into effect after it is signed, and will lose its effect correspondently when the principal leaves his office, and this agreement has to be re-signed with the successor. 本责任书自签署之日起生效，责任人因工作变动或离职时本责任书自动失效，同时新上任的责任人须重新签定。
- My wages are the principal source of my income. 薪金是我收入的主要来源。
- The olive leaf is a badge of peace. 橄榄叶是和平的象征。
- 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。
- 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。
- I saw him take a leaf out of the book. 我看见他从书上撕下一页。
- The maple leaf is the emblem of Canada. 枫叶是加拿大的象征。
- The principal discouraged unexcused absences. 校长不准无故缺课。
- The trees and shrubs were in full leaf. 那些树和灌木枝叶茂盛。
- 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。
- Our school gave a reception to our new principal. 我们学校为新校长举行了欢迎会。
- One of several metal strips forming a leaf spring. 簧片构成片簧的几个金属片中的一个
- The principal knew all the students individually. 校长认识每个学生。
