a control character that indicates moving a space to the left
双语例句
1
Even if monitored, a casual attacker will be stymied by the presence of backspace and other characters that apparently alter the presence or order of characters in the password string.
即使受到监视，使用后退键或者其他明显破坏密码字符串显示和顺序的字符，都可以使偶然的攻击者无所适从。
2
Requiring nonprintable characters, such as backspace or pause, is a simple way to add another layer of obfuscation to your password.
使用不可打印的字符(例如退格键或暂停)可以提高密码的模糊度。
3
When a user mistypes, the Backspace key "undoes" the erroneous characters.