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A line that marks the boundary between two areas, regions, or concepts.
自然形成的分界线通常难以改变。
Naturally formed dividing lines are usually difficult to change.
法律与道德之间的分界线有时很模糊。
The dividing line between law and morality can sometimes be blurry.
Often used in geographic, political, or abstract contexts.
Use '分界线' to describe boundaries between countries, concepts, or stages (e.g., 'childhood and adulthood'). Avoid using it for gradual transitions—opt for '过渡期' (transition period) instead.
The literal meaning refers to physical boundaries (e.g., a river), while the figurative meaning applies to abstract concepts (e.g., 'the dividing line between work and life').
Composed of 分 (fēn, 'to divide') + 界 (jiè, 'boundary') + 线 (xiàn, 'line'). The term emerged in classical Chinese to describe physical or conceptual boundaries and remains in modern usage.
Commonly used in both literal (e.g., geographical) and figurative (e.g., ideological) contexts. The term implies a clear separation rather than a gradual transition.