如何在 rmarkdown / pandoc 中创建带有非增量嵌套列表的增量列表？

Question

我正在使用 rmarkdown 创建投影仪演示文稿。我希望顶级项目符号（在某些幻灯片上）增加，但子项目符号与顶级项目符号一起出现。

我如何实现这一目标，理想情况下无需诉诸 Markdown 文档中的乳胶代码？

以下各种尝试。我得到的最接近的使用暂停（即点），但它在顶级项目符号之间添加了一个段落分隔符，这是我不想要的（并且我再次不想用乳胶代码修复）。

有什么想法吗？

## Attempt 1: all incremental

>- First item
>- Second item
    * First sub-item
    * Second sub-item

## Attempt 2 (extra space): all incremental

>- First item
>- Second item
    * First sub-item
    * Second sub-item

## Attempt 3 (even more space): all incremental

> - First item
> - Second item
     * First sub-item
     * Second sub-item

## Attempt 4: all incremental

>- First item
>- Second item
>    * First sub-item
>    * Second sub-item


## Attempt 5: all incremental

::: incremental

- First item
- Second item
  * First sub-item
  * Second sub-item

::: 

## Attempt 6: non-incremental

::: incremental

- First item

::: 

- Second item
  * First sub-item
  * Second sub-item

## Attempt 7: non-incremental

- First item
. . . 
- Second item
  * First sub-item
  * Second sub-item

## Attempt 8: appears correctly but too big a gap between first and second item

- First item

. . . 

- Second item
  * First sub-item
  * Second sub-item

## Attempt 9 (two spaces at end of line): appears correctly but too big a gap between first and second item

- First item  
  
. . .  
  
- Second item
  * First sub-item
  * Second sub-item

Answer 1

只需一点点乳胶代码：

---
output:
  beamer_presentation:
---

- First item\pause
- Second item
  * First sub-item
  * Second sub-item