1. 1〔権力〕power;〔影響力〕influence
    • 勢力を振るう
    • wield one's influence/hold sway ((over))
    • 勢力を得る
    • gain influence [power]/become influential
    • 勢力を失う
    • lose one's power [influence]
    • 彼の勢力が増してきた
    • His influence [power] is increasing [growing/on the rise].
    • 彼は出版界で勢力がある[ない]
    • He is powerful [powerless] in the publishing world.
    • 彼の業界での勢力は大きい
    • He has great influence within the industry.
    • 彼女の教育界での勢力は衰えつつある
    • Her influence in educational circles is waning.
    • ナポレオンは一時ほとんど全ヨーロッパを彼の勢力下に置いた
    • At one time Napoleon had almost all Europe under his thumb.
    • 東西の勢力の均衡が崩れた
    • The balance of power between the Eastern and Western camps has collapsed.
  1. 2〔勢い〕
    • 台風の勢力が衰えた
    • The typhoon has weakened [lost strength].
  1. 勢力争いa struggle for power; a power struggle
  1. 勢力家an influential man; a powerful man
  1. 勢力範囲[圏]one's sphere of influence