You can write options in uppercase, lowercase, or mixed case.

选项可以是大写、小写或大小写混合形式。

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As in uppercase and lowercase. Changing case requires nothing more than pressing the Shift or Caps Lock key, and yet so few designers take advantage of this technique's potential.

改变字母大小写不过是按一下Shift或者Caps Lock键的功夫，但很少有设计师好好利用了这一技巧的潜能。

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The first statement calls a function (in this case, toUpper, which converts a character to uppercase) on each element of a list.

第一个语句在列表的每个元素上调用函数(本例中为toUpper，用于把字符转成大写)。

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