注意：这个函数是区分字母大小写的。

Note: This function is case-sensitive.

注意：实体名称是区分字母大小写的。

Note that the entity names are case sensitive.

管理员用户帐号的用户名和密码都区分字母大小写.

Both user name and password are case - sensitive in the administrator user account.

管理员用户帐号的用户名和密码都区分字母大小写。

Both user name and password are case-sensitive in the administrator user account.

除了替代、删除、插入之外，Jazzy 还包括了交换相邻字母、改变字母大小写的操作。

As well as substitutions, deletions, and insertions, Jazzy includes operations to swap adjacent letters and to change the case of a letter.

那么如果我们关心字母大小写，只关心实际字符本身呢?

What if we don’t care about letter case, and only care about the actual characters themselves?