> 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/2020/03/09.md).

# 09

吹一个大泡泡很难，戳一个泡泡很容易。

![](https://385430918-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M8iFCzaIpXf8zXqpE6I%2Fuploads%2Fh3UGwSirzZzB15D3IrqG%2F29661651280258_.pic.jpg?alt=media\&token=334aeb11-d174-4843-afc4-705cf8708a78)