A protectorate is a country that is controlled and protected by a more powerful country.
例句
In 1914 the country became a British protectorate.1914年，该国成为英国的保护国。
英汉词典释义
n.
受保护国;受保护领地
He had been Governor of a British Protectorate.他做过英国保护领地的总督。
英英词典释义
Noun
1. a state or territory partly controlled by (but not a possession of) a stronger state but autonomous in internal affairs; protectorates are established by treaty