If one group has ascendancy over another group, it has more power or influence than the other group.
例句
Although geographically linked, the two provinces have long fought for political ascendancy...尽管在地理上彼此依存,两省却长期为获取政治支配权你争我夺。The extremists are gaining ascendancy.极端分子正逐渐占据上风。
英汉词典释义
n.
优势;支配地位
We have had ascendancy over the enemy in the battle.在战斗中我们已占有优势。
英英词典释义
Noun
1. the state that exists when one person or group has power over another;
"her apparent dominance of her husband was really her attempt to make him pay attention to her"