vt.定界限；划界
The first chapter delimits her area of research. 第一章阐明了她的研究领域。
It is necessary to delimit the anomaly clearly. 清楚地圈定异常是必要的。
The group which they delimit are called natural groups. 由此划分出的类群称为自然类群。
The first chapter delimits her area of research. 第一章阐明了她的研究领域。
