R 按行双面布局

r标记：powerpoint演示文稿。
我想创建双面布局：一个绘图和一个文本注释。我知道如何在情节右侧放置带有文字注释的布局：

---
title: My Presentation
output: 
  powerpoint_presentation:
    slide_level: 3

---

### My Slide Title.

:::::::::::::: {.columns}
::: {.column}
```{r, eval=T, echo=F}
plot(cars)
\``` # delete those tick "\" to run
:::
::: {.column}
here is my comment bout the plot blabla....
:::
::::::::::::::

---

但是如何将注释放在绘图下方？

请尝试以下代码：

---
title: "Slides"
author: Scipione Sarlo
date: May 21, 2019
output: powerpoint_presentation
---

# First slide

## test

- first comment
- second comment

# Second slide


:::::::::::::: {.columns}
::: {.column}

```{r, eval = T, echo = F,fig.cap = "comment below the plot here it is",fig.height = 4}
plot(cars)
``` 
:::
::: {.column}

This is an example.

- first plot comment
- second plot comment

:::

---

请尝试以下代码：

---
title: "Slides"
author: Scipione Sarlo
date: May 21, 2019
output: powerpoint_presentation
---

# First slide

## test

- first comment
- second comment

# Second slide


:::::::::::::: {.columns}
::: {.column}

```{r, eval = T, echo = F,fig.cap = "comment below the plot here it is",fig.height = 4}
plot(cars)
``` 
:::
::: {.column}

This is an example.

- first plot comment
- second plot comment

:::

---

在区块选项中，尝试使用

fig.cap

（图标题），例如

fig.cap=“绘图下方的注释在此处”

在区块选项中，尝试使用

fig.cap

（图标题），例如

fig.cap=“绘图下方的注释在此处”