词典释义：
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Perseveration is susceptibility to interference from previous stimuli.
持续言语是指对既往刺激的抗干扰能力受损。
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And though perseverance can be an admirable trait and is essential for all success in life, when taken too far it becomes perseveration - uncontrollable repetition - or simple perversity.
尽管恒心毅力是个令人羡慕的品质并且是成功必不可少的要素，但是一旦过度它就变成了固执——不可控制的重复——或者简单的坚持。
词根 persist
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perseverance n. 坚持不懈；不屈不挠
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persistence n. 持续；固执；存留
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persist vi. 存留，坚持；持续，固执 vt. 坚持说，反复说
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persevere vi. 坚持；不屈不挠；固执己见（在辩论中）
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perseverate vi. 患持续言语症；表现固执