A particular kind of tsar is a person who has been appointed by the government to deal with a particular problem that is affecting the country.
例句
...the former New York police chief who was appointed as 'drug tsar' by Bill Clinton...被比尔·克林顿任命为“反毒特使”的前纽约警察局局长He promised to appoint an AIDS czar to deal with the disease.他许诺任命一位艾滋病大使来应对这种疾病。
英汉词典释义
n.
俄国沙皇
He assumed full authority as tsar in 1689.1689年他全面掌权做了沙皇。He was executed in 1887for plotting to assassinate the tsar.他因密谋暗杀沙皇在1887年被判处极刑。The tsar protected his personal prerogatives.沙皇维护了自己的私人特权。
英英词典释义
Noun
1. a male monarch or emperor (especially of Russia prior to 1917)