详细解释:a. 在后的, 其次的, 后面的
n. 后部, 臀部
【医】 后的, 后面的
词型变化：
副词:posteriorly英语解释：
名词 posterior:
the fleshy part of the human body that you sit on同义词：buttocks, nates, arse, butt, backside, bum, buns, can, fundament, hindquarters, hind end, keister, prat, rear, rear end, rump, stern, seat, tail, tail end, tooshie, tush, bottom, behind, derriere, fanny, ass