And most programing languages and compilers of the 1950s could only run on a single type of computer.

1950 年代的大多数编程语言和编译器只能在单一类型的计算机上运行。

Almost all programing languages start arrays at index 0, and use a square bracket syntax to denote array access.

几乎所有编程语言都从索引 0 开始数组，并使用方括号语法来表示数组访问。