two portadj.四端的(二端对的)twonum.二；两个Two-stage and multi-layered teaching两环节多层次教学two thousand two hundred and sixty eight(=2268) 二千二百六十八two thousand one hundred and twenty nine(=2129) 二千一百二十九two-dimensionally scanned laser sensor二维扫描激光传感器two thousand one hundred and sixty eight(=2168) 二千一百六十八two thousand one hundred and thirty nine(=2139) 二千一百三十九Two-dimensional two-channel wavelets二维二通道小波two thousand two hundred and forty eight(=2248) 二千二百四十八two thousand five hundred and thirty two(=2532) 二千五百三十二two thousand two hundred and thirty five(=2235) 二千二百三十五