breakdownn.
英 'breɪkdaʊn | 美 'brek'daʊn
中文n. 故障；崩溃；分解；分类；衰弱；跺脚曳步舞
词根词源
breakdown (n.)"a collapse," 1832, from break (v.) + down (adv.). The verbal phrase is attested from late 14c. The noun, specifically of machinery, is from 1838; meaning "an analysis in detail" is from 1936. Nervous breakdown is from 1905.
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