adj.未逃跑的；保有的
UNESCAP chief Heyzer says governments can not do the job alone. 亚太经社会执行秘书长诺琳.
Recently, an increasing number of people begin to complain their work stress increasing. Many experts point out it to be an unescaped modern society development result. 现在，越来越多的人们开始抱怨工作比以前更有压力。许多专家指出这是现代社会发展必然的结果，无法避免。
If the PCRE_EXTENDED option is set, an unescaped # character outside a character class introduces a comment that continues up to the next newline character in the pattern. 如果分支在子模式（在下面定义）中，则“成功匹配”表示同时匹配了子模式中的分支以及主模式的其它部分。
If the PCRE_EXTENDED option is set, an unescaped # characteroutside a character class introduces a comment that contin-ues up to the next newline character in the pattern. 这些选项改变的范围依赖于设定在模式出现的位置。子模式（在后面定义）之外的设定，其效果等同于选项在开始匹配时设定或者取消设定。
The backslash character ('') serves to introduce escaped constructs, as defined in the table above, as well as to quote characters that otherwise would be interpreted as unescaped constructs. 否则那些字符就会被解释成非转义的符号。随便找本高级语言的书，看看反斜杠的用法就明白了。
