headilyadv.性急地；任性地headn.头部；头脑；顶端；领袖；硬币的正面v.前进；为首；朝向adj.首要的；前面的Head-chest leads头胸导联head word analysis中心词分析法head configuration磁头形状headspace injector顶空进样head and chest set戴挂式电话机head the ball high顶出高球Head smut of maize玉米丝黑穗病headtape interface头带界面head of epididymis附睾头head-first slide前攫滑垒