Ten-armed oval-bodied cephalopod with narrow fins as long as the body and a large calcareous internalshell.
卵形身体的十肢头足类动物，窄的鳍和身体一样长，钙质内壳大。
2
The C shell uses a "C-like" syntax and has borrowed many features from the Bourne shell, but uses a different set of internalshell commands.
C shell 使用的是“类C”语法，借鉴了 Bourne shell 的许多特点，只是内部 shell 命令集有所不同。
3
The bash shell contains two types of commands: builtins, which are internal, and external programs (or external filters and commands), which are typically self-contained binary program files.