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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.
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Not just images
She said: "I think we have some very good [treatment] options, and we can usually find something that will suit everyone in amongst all of those options."
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/etc is also writable, but it’s managed a bit differently. OSTree uses a technique called “etc overlay” to handle modifications in /etc. When an update is applied, OSTree compares files in the new version with those in /etc and applies changes intelligently, preserving local modifications as much as possible.
The people of the world saw their planet as the astronauts saw it - fragile and beautiful, shining in the desolation of space.。一键获取谷歌浏览器下载对此有专业解读