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- Although there are differences in color, density and etc. in inner and outer surface of the ancient jades, principal phase compositions are identical. 古玉器内部与表层在颜色、致密度等存在差异，但主要物相组成相同。
- The calculated Arrhenius activation energy Ep (principal phases) and Er (residual phases) was 77.13 KJ/mol and 156.7KJ/mol, respectively. 大量脱木素阶段和残余脱木素阶段的活化能分别为77.;13KJ/mol和156
- 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 child is going through a difficult phase. 那孩子正经历困难的阶段。
- 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 two sets of traffic lights were out of phase. 那两组交通灯不同步。
- 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。
- The principal has a very tight schedule. 校长的日程表排得满满的。
- They have decided to phase in the new techniques. 他们已决定逐步引入新技术。
- The windshield wipers are out of phase now. 挡水玻璃刮水器现在动作不协调。
- 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。
