irritationn.
英 ɪrɪ'teɪʃn | 美 ,ɪrə'teʃən
中文n. 刺激；激怒，恼怒，生气；兴奋；令人恼火的事
词根词源
irritation (n.)early 15c., in reference to sores and morbid swelling, from Middle French irritation or directly from Latin irritationem (nominative irritatio) "incitement, irritation," noun of action from past participle stem of irritare (see irritate).
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