任一个

any one of (a list of possibilities)

surname Ren / Ren County 任縣|任县[Ren2 Xian4] in Hebei

to assign / to appoint / to take up a post / office / responsibility / to let / to allow / to give free rein to / no matter (how, what etc) / classifier for terms served in office, or for spouses, girlfriends etc (as in 前任男友)

any / either

one / single / a (article) / as soon as / entire; whole; all; throughout / "one" radical in Chinese characters (Kangxi radical 1) / also pr. [yao1] for greater clarity when spelling out numbers digit by digit

used in 自個兒|自个儿[zi4 ge3 r5]

variant of 個|个[ge4]

(classifier used before a noun that has no specific classifier) / (bound form) individual