界线分明 meaning in English

clear demarcation

One of the nuclei at the micropylar pole becomes delimited by a small amount of cytoplasm .
珠孔端有一个核，因为带有少量细胞质而变成界线分明。
The driveway or the hedge or the fence between you is not really a cold shoulder , but it is a clear boundary . we all like clearly defined boundaries for ourselves
邻里之间的车道、树篱或栅栏其实不是冷漠的表示，而是一道明确的边界而已。一般人都喜欢界线分明。
For example , if the overall system consists of clearly delineated member systems , you might choose to create solutions based on the boundaries of each system in the solution
例如，如果整个系统由彼此界线分明的成员系统组成，则可以选择根据解决方案中每个系统的边界创建解决方案。
Feminine beauty is emphasized by applying rouge from the eye sockets down , leaving the forehead , the nose bridge and the area around the mouth as they are
一般生旦化妆都是在白底彩上施以浓淡变化有致的胭脂，揉抹于眉心、眼眶、两颊和下颏，独留前额和鼻梁界线分明的光亮位，增强立体感。