![如何用 TikZ 复制图形](https://linux22.com/image/405018/%E5%A6%82%E4%BD%95%E7%94%A8%20TikZ%20%E5%A4%8D%E5%88%B6%E5%9B%BE%E5%BD%A2.png)
答案1
给你一个开始。
\documentclass[tikz,border=3mm]{standalone}
\usetikzlibrary{decorations.pathreplacing}
\begin{document}
\begin{tikzpicture}[font=\sffamily,>=stealth,thick]
\draw[very thick] (0,0) -- (8,0) node[midway,below] {ble ble};
\draw[<->] (0,0.5) -- ++ (4,0) node[pos=0.3,above]{bla bla};
\draw[<->] (8,0.5) -- ++ (-2.5,0) node[pos=0.95,anchor=south west]{CCCCC};
\draw[decorate,decoration={brace,mirror}] (8,1.5) -- ++ (-4.5,0)
node[midway,above=2pt]{AAAA};
\end{tikzpicture}
\end{document}