delineation unit

例句：

1. 1. The team needs to delineate the boundaries of their project.
   团队需要明确项目的范围。
2. 2. The researcher used a delineation unit to measure the distance between two points.
   研究员使用一个划分单位来测量两点之间的距离。
3. 3. The architect designed the building with precise delineation units to ensure structural integrity.
   建筑师设计建筑时使用了精确的划分单位，以确保结构完整性。