安全线 ānquánxiàn safety line Origin Definitions Defs Strokes Stroke Words Sentences Sents ānquánxiàn safety line · safety limit 安全 ānquán noun safety safety; security线 線 xiàn noun boundary boundary; demarcation line; frontline; verge; brinkānquánxiàn security thread 安全 ānquán noun safety safety; security线 線 xiàn noun thread thread; string; wire; something long and thin like a thread; (bound form) made of cotton thread