短語(yǔ)詞組短語(yǔ)big mutation operation 大變異操作Big Number Operation Methods 大數(shù)目操作方法Big orthopedic operation 骨科大手術(shù)operation of big integer 大整數(shù)運(yùn)算Surgical Operation Risk Big 手術(shù)危險(xiǎn)性大 返回 big operation