什么是“ the native machine language of a computer”？

如标题所示，这句话出自《 The Go Programming Language 》第 1 页：

Go is a compiled language. The Go toolchain converts a source program and the things it
depends on into instructions in the native machine language of a computer. These tools are
accessed through a single command called go that has a number of subcommands. The sim-plest of these subcommands is run , which compiles the source code from one or more source files whose names end in .go , links it with libraries, then runs the resulting executable file.

现有以下疑问： （ 1 ）“native”在这里想表达什么意思？ （ 2 ）“machine language of a computer”里面，machine language 在这里具体指什么（如：machine code ）？ 希望各位大佬帮忙解答以下。