rarefazer[P] rarefazer (vp, vt)[E] rarefy [r'ɛərifai] (vi, vt)[C] 稀有化,使..稀有化
rarefativo[P] rarefativo (a)[E] rarefactive [rɛərif'æktiv] (a)[C] 稀有化的
rarefação[P] rarefação (f)[E] rarefaction [rɛərif'ækʃən] (n)[C] 稀有化