With respect to a typewriter or similar printer, to change from printing capital letters to printing lower case letters.
对于打字机或类似的打印机来说，将打印大写字母改变成打印小写字母。
With respect to a typewriter or similar printer, to change from printing capital letters to printing lower case letters.
对于打字机或类似的打印机来说，将打印大写字母改变成打印小写字母。
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