in·flu·en·tial /ˌɪn(ˌ)fluˈɛn(t)ʃəl/
(a.)有影響的,施以影響的;有權勢的
In·flu·en·tial a. Exerting or possessing influence or power; potent; efficacious; effective; strong; having authority or ascendency; as, an influential man, station, argument, etc.
A very influential Gascon prefix. --Earle.
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influential
adj : having or exercising influence or power; "an influential
newspaper"; "influential leadership for peace" [ant: uninfluential]