continuing firmly or obstinately in a course of action in spite of difficulty or opposition
坚持不懈的;执意的
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one of the government's most persistent critics .一个最执着的政府批评者
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an attempt to stop persistent drink-drivers. 制止顽固的酒后驾车者的努力。
continuing to exist or endure over a prolonged period
持续的,持久的
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persistent rain will affect many areas .连绵阴雨会影响许多地区。
occurring repeatedly over a prolonged period
不断的,连续长时间发生的
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persistent reports of human rights abuses by the military .关于军队侵犯人权的接连不断的报告。
(of a chemical or radioactivity)remaining within the environment for a long time after its introduction
(化学品,放射性)作用持久的,挥发慢的
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PCBs are persistent environmental contaminants .多氯联苯是持久的环境污染物。
【植,动】 (动植物某部位,如角、叶等)宿存的,不落的。
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