Most people have passwords that are alphanumeric or, in the case of a security-conscious individual, alphanumeric with the addition of other keyboardsymbols.
大多数人拥有字母数字式密码，或者有安全意识的人，拥有附带其他键盘符号的字母数字式密码。
2
The system relied on visual symbols, not sound, and used a large stationary keyboard that proved to be too cumbersome.
这个系统依靠的是视觉符号而不是声音，并且使用了一个巨大的固定键盘，现在看来显然太笨重了。
3
Use all the symbols on a standard ASCII keyboard and you have 95 to choose from.