[1. 踩坑1](1.%E9%81%87%E5%88%B0%E7%9A%84%E9%97%AE%E9%A2%98.md) [2. 踩坑2](2.%E9%97%AE%E9%A2%98.md) [3.知识点整理](3.%E6%B3%A8%E6%84%8F%E4%BA%8B%E9%A1%B9.md)