> 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/2017/02/22.md).

# 22

我儿子问如果从南北两极把地球钻个洞，一个人跳下去，这个人会怎样？谁有答案？

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