请将 上述新闻概要 翻译 ,标注不认识的 新单词 并从词典中查出相应的单词解释。 1. Fighting the virus: Unprecedented medical aid from across China China has mobilized the power of the whole country and launched unprecedented medical aid to Hubei province, center of the novel coronavirus outbreak. Doctors including TCM medical workers, nurses such as those with intensive care expertise, emergency rescuers, experts and academicians, all come to the front line from across the country. 2. Online classes can't replace classrooms This week should have seen the beginning of a new semester. Instead, China has been witnessing a different kind of new semester because of the novel coronavirus outbreak: many Chinese schools have suspended the new semester and moved the classrooms online. On the first day of school, DingTalk, a virtual workplace developed by Alibaba Group, held online classes for an estimated 50 million students nationwide, from primary to high school level.