柯林斯英汉双解大词典

oligarchy /ˈɒlɪˌɡɑːkɪ/ ( oligarchies )

1.N-COUNT An oligarchy is a small group of people who control and run a particular country or organization. You can also refer to a country which is governed in this way as an oligarchy. 寡头统治集团; 寡头统治国家

2.N-UNCOUNTOligarchy is a situation in which a country or organization is run by an oligarchy. 寡头统治