pandoc -s -t beamer --pdf-engine=xelatex -o solution03.pdf solution03.md -V theme:Madrid -V fontsize=14pt
1. 加链接：[arXiv:1909.02320](https://arxiv.org/abs/1909.02320)
2. 字体颜色：\textcolor{blue}{If confirmed, this work has broad applications.}
3. 长公式，保持同列：
\begin{align*}
E &=\frac{\sigma}{\varepsilon_0}=\frac{q}{4 \pi \varepsilon_0 R^2}=\frac{(3.0 \times 10^{-8})(8.99 \times 10^9)}{(0.15)^2} \\
&= 1.2\times 10^4\ \mathrm{N/C}
\end{align*}
4. 标题：
% General Physics II
% Solution #1
% 2019/10/09
5.左文字右公式：
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abcde
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6. 仅图片
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