提示：第二个单词以字母C开头，它描述了一个学生们上课的地方。

Hint: The word starts with a C and describes a place where students take their lessons.

提示: 第二个单词以字母C开头,它描述了一个学生们上课的地方.

Hint : The word starts with a C and describes a place where students take their lessons.

但是我研究了一下字典，我发现除了字母S外，以C开头的单词比其它任何字母都要多。

But I did a survey of the dictionary and found that the C starts more words than any other letter in the alphabet except S.

键入ls [a-c]*以查找以a、b或c开头的所有文件名。此处的 * 在Shell中不像grep的解释器那样修饰 [a-c]，*被解释为.*。?

Typing ls [a-c]* finds all file names that begin with a, b, or c. Here, the * does not modify the [a-c] as grep's interpreter would; in the shell, * is interpreted as .*.