virtuous circle的词源

英文词源

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abstruse

abstruse: [16] It is not clear whether English borrowed abstruse from French abstrus(e) or directly from Latin abstrūsus, but the ultimate source is the Latin form. It is the past participle of the verb abstrūdere, literally ‘thrust’ (trūdere) ‘away’ (ab). (Trūdere contributed other derivatives to English, including extrude and intrude, and it is related to threat.) The original, literal meaning of abstruse was ‘concealed’, but the metaphorical ‘obscure’ is just as old in English.

中文词源

virtuous circle：良性循环

virtuous,良性的，美好的，circle,圈，循环。

该词的英语词源请访问找单词词源英文版：virtuous circle 词源，virtuous circle 含义。