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1. Oxford American Dictionary

   persistent

   • IPA[pərˈsistənt]

   美式

   • adj.
     continuing firmly or obstinately in a course of action in spite of difficulty or opposition；continuing to exist or endure over a prolonged period
2. • 釋義

   adj.

   形容詞

   • 1. continuing firmly or obstinately in a course of action in spite of difficulty or opposition he has been a persistent critic of the project 同義詞 tenacious, persevering, determined, resolute, purposeful, ... 更多dogged, single-minded, tireless, indefatigable, pertinacious, patient, diligent, assiduous, sedulous, unflagging, untiring, unwavering, insistent, importunate, relentless, unrelenting, stubborn, intransigent, obstinate, obdurate反義詞 irresolute
   • 2. continuing to exist or endure over a prolonged period persistent rain will affect many areas persistent reports of human rights abuses by the military 同義詞 continuing, constant, continual, continuous, nonstop, ... 更多lasting, never-ending, steady, uninterrupted, unbroken, interminable, incessant, unceasing, endless, unending, perpetual, unremitting, unrelenting, relentless, unrelieved, sustained, chronic, permanent, lingering, nagging, frequent, repeated, habitual反義詞 intermittent, occasional
   • ▪ (of a chemical or radioactivity) remaining within the environment for a long time after its introduction PCBs are persistent environmental contaminants
   • 3. (of a part of an animal or plant, such as a horn, leaf, etc.) remaining attached instead of falling off in the normal manner.