two all二平
twonum.二;两个
two-way error model双向误差模型
two-ways regulation双向调节
two-bearing machine双轴承型电机
two tone transmission双音频传输制
two hundred and forty(=240) 二百四十
two-stage treatment双期矫治
two-stage bleaching两段漂白
two - color diagram双色图
two-variable matrix双变量矩阵
two way infinite tape双向无限带