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 .
例句
Athens was suffering under the rule of an oligarchy that had no concern for the people's welfare.雅典當時飽受寡頭集團的統治，他們對人民的福祉毫不關心。
N-UNCOUNT
寡頭政治；寡頭統治
Oligarchy is a situation in which a country or organization is run by an oligarchy.
例句
...a protest against imperialism and oligarchy in the region.對該地區帝國主義和寡頭政治的抗議