> For the complete documentation index, see [llms.txt](https://www.oulan.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://www.oulan.com/2020/03/07.md).

# 07

小时候我们就知道泡泡儿能吹多大，肺活量觉得有多大。

![](/files/pcTeivU4WKKc3LYI6cMc)