With Base64, it will also enter the string or data encoding is ASCII code Chengquan printable string.

同Base64一样，它也将输入的字符串或数据编码成全是ASCII码的可打印字符串。

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IsPrintable , which returns TRUE if the given string contains no unprintable characters and returns FALSE if the given string does contain printable characters.

isPrintable，在给定字符串不包含不可打印字符时返回TRUE，而在给定字符串确实包含不可打印字符时返回FALSE。

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Line 4 encodes the string Double secret probation and USES Base64 to turn the encrypted string into printable characters that can easily be transmitted over E-mail, say.

行4编码字符串Double secret probation并使用Base64将加密了的这个字符串转变为可打印的字符，以便于用电子邮件等程序传输。

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