统一元数据：构建多模态数据资产目录
Фото: РИА Новости
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Shadow DOM is a web component feature that lets you attach an isolated DOM subtree to any HTML element, hidden from the main document’s standard queries. A querySelector('audio') on the main document cannot see inside a Shadow Root unless you specifically traverse into it. If fermaw’s player was mounted inside a Shadow Root, basic DOM searches would come up empty.
玩法二：从世界上的某一扇窗看城市天气
Venezuela crisis