请把以下段落翻译成中文: Wuhan may not be a well-known Chinese mega-city like Beijing or Shanghai. But the place where the coronavirus outbreak emerged is, in fact, a crowded metropolis with connections to every part of the globe. Estimates vary on the exact size of the population, with local government officials putting the figure at 11 million, though UN data from 2018 says 8.9 million people live in the central Chinese city.