jiè​xiàn HSK7

dividing line

界线 (界線) jiè​xiàn
dividing line noun
a physical or conceptual line that marks a boundary or separation between two things

This park serves as the boundary between the two districts.

limits noun
the abstract bounds or constraints defining the extent of something

Your behavior has already crossed the moral line.

Frequency

Movie subtitles
1.85 per million appears in 1% of films
Written text
2.65 per million

Details

HSK 3.0
Level 7

Sources

Definitions
CC-CEDICT