Here we copy the current arg, indexed by argno (which was initially set to 1, to point to the first actual arg after the command itself) to string var s1.

这里，我们将由argno(初始时被设为1以指向命令本身后的第一个实际参数)索引的当前参数复制到字符串变量s1。

youdao

Here we copy the current arg, indexed by argno (which was initially set to 1, to point to the first actual arg after the command itself) to string var s1.

这里，我们将由argno(初始时被设为1以指向命令本身后的第一个实际参数)索引的当前参数复制到字符串变量s1。

youdao