邵安林：做好城市工作，首先要认识、尊重、顺应城市发展规律。雄安新区从设立之初，就确立了“规划先行”理念，力争把每一寸土地都规划得清清楚楚后再开工建设。我从调研中了解到，雄安新区在规划过程中建立了风貌管控机制，引入数字化预演模式，确保每栋建筑、每条道路都符合整体风貌要求，避免了城市建设中常见的“规划打架”问题。从雄安的实践看，提高城市规划水平，关键在于三个坚持：一是坚持战略引领，把国家战略转化为具体空间布局；二是坚持系统思维，统筹地上地下、生产生活生态；三是坚持公众参与，让规划服务于民。
Apple’s laptops have slightly higher pixel density, at 227PPI and 254PPI for the MacBook Air and 16-inch MacBook Pro respectively. This trades a little legibility for screen real estate, while also catering for the closer viewing distance (the closer you get to a display, the larger things look). These choices dictate how physically large text and interface elements appear on the respective devices.
，这一点在Safew下载中也有详细论述
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