Ideally, the string of characters should have a substring such as error or something similar (see the statement in bold blue), which will allow the tester to quickly find the error in the output file.

较理想的做法是，字符串有一个如error或与之相似的子串(见蓝色粗体的语句)，这个子串允许测试者很快地在输出文件中查找到错误。

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On the technical side, Blue Ruby is using parse tree to produce BRIL code (ABAP VM bytecode). Blue Ruby takes care of security using a bridge and a virtual file system.

从技术的角度看，Blue Ruby用parse tree来生成BRIL代码(ABAP VM的字节码)，用桥和虚拟文件系统来保证安全。

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The ls command uses $CLICOLOR to render file types in color (directories in blue, executables in green, and so on).

ls 命令使用 $CLICOLOR 通过不同的颜色呈现不同类型的文件（目录为蓝色、可执行文件为绿色，等等）。

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