octal code造句

• Always refer to backreferences , not octal codes
  总是指反向引用，而不是八进制代码。
• And up are considered backreferences if there is a backreference corresponding to that number ; otherwise , they are interpreted as octal codes unless the starting digits are 8 or 9 , in which case they are treated as literal " 8 " and " 9 "
  和更高位表达式在具有与该号码对应的反向引用时被视作反向引用；否则，它们会被解释为八进制代码（除非起始位是8或9 ，在这种情况下它们被视为原义的“ 8 ”和“ 9 ” ） 。