nine in base thirteen

What is nine and thirteen Four and nine is thirteen什么意思 base in 用法base in base on 区别 base in的意思 Thirteen billion,six hundred and ninety-one,nine hundred and eight thirteen six one!seventeen nine eight twenty-fore fort thirteen thirty three twenty-nine(用“＜”连起来） class,in,girls,are,your,there,thirteen There are some flowers in the base nine o clock in the 初一新标准英语im thirteen.how old are you?im thirteen too .im in cl 英语翻译pieces in base colordecorative ribbon in contrast color