半个世纪前,一位苏联公民与中国妇女在天津结婚,生育姐妹二人。尔后,父亲携长女回国,从此音信断绝。43年后,苏联女儿致函天津今晚报,请求寻找中国母亲。现在,妹妹已是美国公民,母亲已移居美国。分别属于中、苏、美三国国籍的亲骨肉是怎样团聚的呢? Half a century ago, a Soviet citizen married Chinese women in Tianjin and gave birth to two sisters. Later, my father brought her daughter home and cut off the news. Forty-three years later, the Soviet daughter sent a letter to the Tianjin Evening Newspaper asking for a Chinese mother. Now, my sister is a U.S. citizen and her mother has emigrated to the United States. How are the pro-flesh and blood groups belonging to the nationalities of China, the Soviet Union and the United States respectively reunited?