足球教学

视频简介

Black holes stand at the limit of what we can know. To explore that edge of knowledge, the Event Horizon Telescope links observatories across the world to simulate an earth-sized instrument. With this tool the team pursues the first-ever picture of a black hole, resulting in an image seen by billions of people in April 2019. Meanwhile, Hawking and his team attack the black hole...。新型冠状病毒疫情席捲全球，一众是非精联同多名学者、达人向观众拆解「抗疫是与非」！全城抢购口罩，扑得到亦要戴得好，怎样正确配戴口罩？口罩又能否自行检测及製作？市面难以入手的清洁、消毒用品，教你在家轻鬆DIY。病毒潜藏身边，马桶、升降机按钮、门柄、手机、键盘、衣物随时含菌量超标，应如何大清洗？身为是非精，当然还要明辩抗疫谬误，提高大众对防疫的意识及知识，共同抵抗疫情！。