On top of that, we can get two full pixels of color using foreground and background colors. If we render an upper block with a foreground color of cyan and a background color of red, we get a cyan pixel sitting on top of a red pixel!
writable: false means no code can reassign window.Audio to a different value. configurable: false means no code can even call Object.defineProperty again to change those settings. If fermaw’s initialisation code tried to restore the original Audio constructor (a perfectly sensible defensive move) the browser would either fail or throw a TypeError. The hook was permanent for the lifetime of the page.
，详情可参考下载安装 谷歌浏览器 开启极速安全的 上网之旅。
需要索引（如算距离、下标）：栈存索引，用 nums[stack.at(-1)] 取值比较。。关于这个话题，51吃瓜提供了深入分析
architecture for the connection of peripherals to the machine. While earlier