an expert who studies or works in one of the sciences.
Scientist
a person who flies an aircraft.
Pilot
a soldier, usually one who has both experience and skill in fighting, especially in the past. （尤指旧时的）武士，勇士
Warrior
a male ruler of an empire (a group of countries ruled by a single person, government, or country). 皇帝
Emperor
used to say that something is sad, disappointing, or has a bad effect. 不幸地；倒霉地
Unfortunately
very bad condition
critical
Abraham Lincoln was the 16th _________ of the United States.
president
the person in charge of a group or organization, or the ruler of a tribe (a large family or other group that someone belongs to). 领导人；首领；头目；酋长
Chief
______ _____ signals a life-threatening emergency, usually on a ship or a plane
May day
to encourage people to like, buy, use, do, or support something.
Promote
freedom from war and violence, especially when people live and work together happily without disagreements.
Peace
a building where criminals are forced to live as a punishment.
Prison
The police ________ her for drinking and driving.
arrested
someone who lives in a country or an area that is controlled by a more powerful country. 殖民地居民
Colonist
an ancient story or set of stories, especially explaining the early history of a group of people or about natural events and facts. 神话
Myth/ Legend
not feeling well, or suffering from a disease.
ill
the person who has the highest political position in a country that is a republic and who, in some of these countries, is the leader of the government.
President
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