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。
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。
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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