这段代码接受来自用户的受感染数据，检查要打印的字符只有字母和数字字符以及空格符，以此来提供安全保护。
This piece of code takes up tainted data from the user, ensuring protection as it checks that the characters to be printed are only alphanumeric characters and Spaces.
第二个参数严格匹配一个非字母和数字组成的字符串，该字符串后面依次为空格、整数、另一个空格，最后是一个实数。
The second argument strictly matches a non-alphanumeric string followed by a space followed by an integer followed by another space and finally a real number.
另一方面，EBCDIC中的排序序列则是：空格、小写字符、大写字符和数字值。
On the other hand, the collating sequence in EBCDIC is: space, lower case characters, upper case characters, and numeric values.
例如，ASCII中的排序序列是：空格、数字值、大小字符、小写字符。
For example, the collating sequence in ASCII is: space, numeric values, upper case characters, lower case characters.
那么最不容易被破解的密码，将是由完全随机的字母、数字、空格和符号组成的一串很长的字符-但你永远记不住它。
The least hackable password, then, would be a long string of completely random letters, numbers, spaces and symbols – but you'd never remember it.
在寻找回文时，输入行中的除了罗马字母以外的其他字符，比如标点符号，数字，空格，和tab符号，全部忽略。
On finding palindromes, any characters in the input except Roman alphabets, such as punctuation characters, digits, Spaces, and tabs, should be ignored.
网站名称只能包含字母、数字、句点、连字符、下划线和空格。请输入其他名称。
Web names can only contain letters, Numbers, periods, dashes, underscores and Spaces. Please enter a different name.
单词是由空格和非数字字符作为分隔的。
Words are delimited by white space or characters that are not alphanumeric.
第一线包含三字符的数字号码，其后跟-号，接着是文本。最后一线用空格代替减号。
The first line contains the three-letter numerical code followed by the - character and then the text.
计算机程序设计及操作时使用的符号。 包括字母、数字、空格符、提示符及各种专用字符等。
This OSD controller, synchronized with horizontal and vertical synchronization signals, operates the display property registers of characters and bitmap set by the user microcontroller application.
计算机程序设计及操作时使用的符号。 包括字母、数字、空格符、提示符及各种专用字符等。
This OSD controller, synchronized with horizontal and vertical synchronization signals, operates the display property registers of characters and bitmap set by the user microcontroller application.
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