英语语法分析

The first backquote not preceded by a backslash terminates the command substitution.

不带反斜杠的第一个后引号终止命令替换。

When entering the command, do not use the backslash.

输入命令时切勿使用反斜杠。

Do not enter the backslash as not part of the command.

因此不要在命令中输入反斜杠。