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In medicine, relating to disease, or caused by disease — "pathological changes in the tissue." In everyday use, it describes a behavior so extreme it seems almost like an illness — "a pathological liar" is someone who lies compulsively, again and again, almost as if they can't help it.
病理的；（比喻）病態的、上癮似的
原始詞典資料4 筆記錄
以下是外部詞典記錄的用法，原文照列，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
pathologicaladj/ˌpæθ.əˈlɑd͡ʒ.ɪ.kəl/
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medicinesciencesPertaining to pathology.
- But we can no longer regard the mere fact of these diffuse condensations of the lung becoming yellow and caseous as an evidence of their tuberculous nature, especially since the pathological anatomists, and among them Virchow, have shown that formations of the most different kind, having not the slightest connection with tubercule— as, for example, old cancerous masses, lymphatic glands swollen by a hyperplasia of cells, hæmorrhagical infarctions, abscesses, &c.— undergo exactly the same caseous transformation.
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medicinesciencesRelating to, amounting to, or caused by a physical or mental disorder.
- Paul Canning's performance as Julian gives the character an emotional center that is not in the script: He is vulnerable without being pathological, needy without being pathetic.
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mathematicssciencesHaving properties which are counterintuitive or difficult to handle.
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computercomputingengineeringHaving properties that cause unusually bad behaviour, especially regarding correctness or performance.
資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。