1. family background：靖、蓉告别洪七公,在太湖归云庄两人遇见杨康与杀害郭啸天的南宋军官段天德,已经知晓自己出身的情况下,郭靖杀死段天德,父仇得报,并将郭、杨两家的家世(Family background)告诉杨康,杨康答应与完颜洪烈决裂,并与郭靖结义.
2. extraction：ancestors, forebears, forefathers 祖先 | extraction 家世 | descent, offspring 后代,后辈
3. The One With the Birth：122 倒人胃口的约会 The One With the Ick Factor | 123 家世 The One With the Birth | 124 瑞秋恍然大悟 The One Where Rachel Finds Out