Now, something that can help you a lot to find that " ung" sound is this word, here.
现在,这个词可以帮助你找到“ung” 的声音。
英语百科
Franz Unger
Franz Joseph Andreas Nicolaus Unger (30 November 1800 in Gut Amthof near village Leutschach in Styria, Austria – 13 February 1870 in Graz) was an Austrian botanist, paleontologist and plant physiologist.