> For the complete documentation index, see [llms.txt](https://overleaf-pro.ayaka.space/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://overleaf-pro.ayaka.space/latex/zh-cn/wen-da/54-how-to-write-multi-lined-equations-using-the-align-environment.md).

# 如何使用 align 环境写多行公式

这是一个共21个视频系列中的第17个，由 [文森特·奈特博士](http://bit.ly/186ai3Z) 卡迪夫大学。在跨越多行的大型方程或推导中，我们可以使用 `\begin{align}` 和 `\end{align}` 命令来正确显示对齐的数学公式。这里我们使用与号（`&`）命令，以确保方程始终按预期对齐。我们还将看到如何使用 `\nonumber` 命令在需要时移除方程中间步骤的方程编号。

{% embed url="<https://www.youtube.com/embed/AzFOqb9WKX4>" %}

视频中给出的示例也作为模板提供在这里。要开始，请单击此处以 [打开“对齐数学”示例](https://www.overleaf.com/latex/examples/hello-world-example/vkbznvsdqjvm).


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