fourwayadj.四通的(由四人参加的)
fournum.四
four-high reversing cold strip mill四辊可逆式带材冷轧机
Fourier finite-difference migration傅氏有限差分偏移
four- year physical education major体育本科专业
four-layer security system structure四层安全体系结构
four thousand three hundred and thirty(=4330) 四千三百三十
four thousand six hundred and nineteen(=4619) 四千六百一十九
four frequency differential laser gyro四频差动激光陀螺
Four Advantages in Western Development西部开发中的四大优势
Four-grid heating dish selling table四斗保温售菜台
four-legged robot soccer competition4腿机器人足球比赛