hegemon
noun [ C ] politics specialized uk/ˈheɡ.ɪ.mɒn/ /ˈhedʒ-/ us/ˈhedʒ.ɪ.mɑːn/
霸主，霸权国家
a leader, country, or group that is very strong and powerful and therefore able to control others
Could the United States lose out to another global hegemon, China? 美国会不会输给另一个全球霸主中国？