frogn.蛙；嗓音沙哑；马的蹄叉；刀剑的挂环frog gypsum“蛙式”位石膏固定frogs' legs宽凿接缝槽面frog centre辙叉心frog breath蛙式呼吸, 舌咽式呼吸frog number辙叉号数frog-face蛙面frog-pads蹄叉垫frog length辙叉长度frog rammer跳跃式打夯机,爆炸夯,蛙式打夯机frog throat辙叉喉