俊之独秀
1.For generations2.generation by generation3.Long generations of4.from generation to generation5.Age by age6.generation after generation例句：For generations the Arabian has shared the hardships of his nomadic master.阿拉伯人一代又一代地分担着它的游牧主人的艰辛。This is because the determinants of heredity maintain their integrity generation by generation.这是因为遗传因子一代又一代地保存它们的完整性。Long generations of servitude have made the countrymen peculiarly subtle in hierarchical distinctions.一代又一代的奴役使乡下人对于等级界限格外敏感。This blood feud was handed down from generation to generation.这血海深仇传了一代又一代。
