他们还要练习字母的大写与小写，学会在三线格内大小写字母的正确规则。
They'll get practice writing upper - and lowercase letters, learning how to shape and space them correctly.
在特定的应用程序中确定升序规则可能会很复杂，例如：大写字母在小写字母之前，扩展ASCII字符按ASCII顺序，等等。
The rules for determining ascending order in a particular application can be very complicated: capital letters before lowercase letters, extended ASCII characters in ASCII order, and so on.
在特定的应用程序中确定升序规则可能会很复杂，例如：大写字母在小写字母之前，扩展ASCII字符按ASCII顺序，等等。
The rules for determining ascending order in a particular application can be very complicated: capital letters before lowercase letters, extended ASCII characters in ASCII order, and so on.
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