hi @pinetree1111 
欢迎
我不确定你是否认为这“简单”，但我觉得挺简单的，因为我偶尔在帖子里就用过，哈哈。
你可以用 来表示空格：
像这样
hello world
this is a line with a leading space
this is a line with 2 leading spaces
this is a line with 3 leading spaces
代码：
hello world
this is a line with a leading space
this is a line with 2 leading spaces
this is a line with 3 leading spaces
你也可以在它们之间加空格
hello world
this is a line with 2 leading spaces
this is a line with 4 leading spaces
this is a line with 6 leading spaces
hello world
this is a line with 2 leading spaces
this is a line with 4 leading spaces
this is a line with 6 leading spaces