结合一位资深职业加盟商的总结，这种困境的出现，主要源于三个致命陷阱，也是很多门店最终闭店的关键原因：
For our purposes, we don’t even need to chase it all the way to raw PCM which is valid avenue albeit in the realm of WEBRips and not defacto “downloaders.” We just need to find the last point in the pipeline where data is still accessible to JavaScript and that point is the MediaSource Extensions API, specifically the SourceBuffer.appendBuffer() method.
，这一点在safew官方版本下载中也有详细论述
And what software?。关于这个话题，heLLoword翻译官方下载提供了深入分析
* 解题思路：先对nums2用单调栈求每个元素的下一个更大值，存入Map缓存；再遍历nums1直接查Map得结果