persistent

persistent
adjective

continuing firmly or obstinately in a course of action in spite of difficulty or opposition
坚持不懈的；执意的
one of the government's most persistent critics.
一个最执着的政府批评者。
■[attrib.]characterized by a specified habitual behaviour pattern, especially a dishonest or undesirable one
固执的，顽固的
an attempt to stop persistent drink-drivers.
制止顽固饮酒司机的努力。
continuing to exist or endure over a prolonged period
持续的，持久的
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
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
PCBs are persistent environmental contaminants.
多氯联苯是持久的环境污染物。
(Botany & Zoology)(of a part of an animal or plant, such as a horn, leaf, etc.) remaining attached instead of falling off in the normal manner
(植，动)（动植物某部位，如角、叶等）宿存的，不落的

派生
persistently
adverb

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