在上，用户可以输入关键词进行搜索，获取相关的网页、图片、视频、新闻等信息。百度搜索引擎以其高效、准确的搜索服务赢得了广大用户的信赖。 The world wide web of Items (IoT) refers to the community of physical devices, vehicles, appliances together with other physical objects that happen to be embedded with sensors, program and network connectivity that permits them to collect and share data... https://jsxdom.com/web-accessibility-audits-wcag-2-1-compliance-services/