prevalencen.
英 'prev(ə)l(ə)ns; 'prevəl(ə)ns; 'prevələns | 美 'prɛvələns
中文n. 流行；普遍；广泛
词根词源
prevalence (n.)1590s, "fact of having mastery," from Middle French prévalence (15c.), from Late Latin praevalentia, from praevalens, present participle of praevalere (see prevalent). Meaning "condition of being widespread or general" is from 1713.
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