foetal (US fetal)

adj of or like a foetus （似）胚胎的: She curled up her legs and arms into a foetal position, ie like that of a foetus in the womb. 她像胎儿一样蜷曲起四肢.

flyleaf, flyover, flysheet, flyweight, flywheel, FM, FO, foal, foam, foamy, fob, focal, focal length (also focal distance), focal point, focsle, focus, focus on, focus...on, fodder, foe, foetus (US fetus), fog, fog-bank, fog-bound, fog-horn, fog-lamp, foggy, fogy (also fogey), foible, foil, foist, fold, foldaway, folder, folding, foliage, folio, folk, folk-dance, folk-music (also folk), folk-song,