‘构线’ (gòu xiàn) literally means ‘to reach the line’ — ‘构’ (gòu) conveys ‘to attain, achieve, or meet’, and ‘线’ (xiàn) means ‘line’ or ‘threshold’. Together, it refers to meeting a minimum standard or passing a critical benchmark, especially in academic, medical, or professional contexts. It is commonly used in formal or official settings — for instance, when describing exam scores that just satisfy the passing requirement, or clinical indicators that cross a diagnostic threshold.

This term carries a neutral-to-positive connotation: it signals successful attainment of a baseline, not excellence. Unlike colloquial expressions like ‘及格’ (jí gé, ‘to pass’), ‘构线’ emphasizes precision — the exact moment or condition at which a defined boundary is met. It appears frequently in policy documents, test score reports, and health screening results, where thresholds are objectively set and rigorously applied.