Ten-armed oval-bodied cephalopod with narrow fins as long as the body and a large calcareous internal shell.

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。

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The C shell uses a "C-like" syntax and has borrowed many features from the Bourne shell, but uses a different set of internal shell 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。

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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.

bash shell包含两类命令：内部的内置命令和外部程序(或外部筛选器和命令，它们通常是自含的二进制程序文件)。

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