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 .*.

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 .*。?

youdao

The optimizer has been able to do algebraic simplification on a+a, instead generating 2*a, and on (c*b)*12 + c*b, instead generating (c*b)*13.

该编译器可以对a+a进行代数简化，即改为生成2*a，也可以对 (c*b)*12 + c*b 进行代数简化，即改为生成 (c*b)*13。

youdao

The optimizer has been able to do algebraic simplification on a+a, instead generating 2*a, and on (c*b)*12 + c*b, instead generating (c*b)*13.

该编译器可以对a+a进行代数简化，即改为生成2*a，也可以对 (c*b)*12 + c*b 进行代数简化，即改为生成 (c*b)*13。

youdao