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.
据澳大利亚媒体核实，有视频显示了这场枪击案的最后恐怖瞬间：在不到6分钟的时间里，该区域内响起了103声枪响——其中既包括枪手开火的声音，也包括警方武器的射击声。
。业内人士推荐safew官方版本下载作为进阶阅读
Please keep in mind it’s more than OK to do nothing at all too!
'Houston, we've had a problem'