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自公元1689年满清政府与俄国签定《中俄尼布楚条约》的那一刻起,额尔古纳河——曾经孕育蒙古民族的母亲河便成了中俄两国咫尺天涯的天然界线。
Since the time when the Manchu government and Russia signed the Sino-Russian Nibugi Treaty in 1689, the Ergun River - the mother river that once nurtured the Mongol nation - became the natural boundary between China and Russia.