一二

• Specification for the first and second order leveling
  国家一二等水准测量规范
• One : one , one , one : two , one , three , four
  一。一一一一一二一三四。
• Separation of the first stage with the second stage
  火箭一二级分离成功，一级坠落。
• Product service catalogs 1 , 2 , or 3 colors
  产品服务目录一二或三色类别冠军benny
• Jo saw her father look at her mother and understood
  乔见父亲望著母亲便知晓一二了。
• They are going to leave for beijing in one or two days
  他们这一二天就要动身去北京。
• Separation of the first stage with the second stage
  火箭一二级分离成功，一级坠落。
• Clerk : one two three four five six seven eight nine ten
  职员：一二三四五六七八九十。
• You hold the front , i ' ll hold the back . one , two , three
  你拉前面，我拉后面。一二三
• It is expounded hare to answar the call of the readers
  这里就此试述一二，以应广大读者。