per annum的词源

英文词源

per annum

Latin, literally "by the year," from per (see per) + annum, accusative singular of annus "year" (see annual).

中文词源

per annum：每年

per,每，annum,年，词源同annular.

该词的英语词源请访问趣词词源英文版：per annum 词源，per annum 含义。