dominants优势种dominantadj.主要的；占优势的；显性的n.主宰者；显性基因dominant symbol显性符号dominant action显性动作dominant series控制级数dominant effect显性效应dominant weight最高权dominant colony优势菌落dominant factor主要因素,优势因子dominant fishes主要鱼类dominant galaxy主星系Dominant Subject时代主题