Capitals and small letters are known as upper case and lower case respectively.
西文大写字母和小写字母均分别称作西文大写字盘和西文小写字盘。
Additionally, all the lower case letters in the string must be converted to upper case.
此外，小写字母应该转化为大写字母。
The contestant may use upper or lower case letters.
外国参赛者可以使用字母大小写作答。
You may assume that each word will contain only lower case letters.
你可以假设每一个单词只包含小写字母。
Z Trace this letter first, then color the matchable upper and lower case letters.
首先按线描好字母，然后将匹配的字母大小写的框内区域图成相同颜色。
Z Trace this letter first, then color the matchable upper and lower case letters.
首先按线描好字母，然后将匹配的字母大小写的框内区域图成相同颜色。
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