名詞 ascendancy:

1. the state that exists when one person or group has power over another
   同義詞：dominance, ascendance, ascendence, ascendency, control

1. He has (gained) the ascendancy over all his main rivals.
   他(獲)有壓倒一切主要對手的優(yōu)勢。

ascendancy 也作 as.cen.den.cy

n.（名詞）
Superiority or decisive advantage; domination:
優(yōu)勢地位：優(yōu)勢或決定性的有利地位；支配：
例句：
.Germany only awaits trade revival to gain an immense mercantile ascendancy.(Winston S. Churchill)
.德國只等著貿易復蘇以獲取巨大的貿易優(yōu)勢.(溫斯頓S.丘吉爾)