Hxen.com's tips：Every day persisted can learn English well!-->■Learn English Everyday■
formal – adj. related to serious or official speech and writing
hamburger – n. a flat, usually round piece of ground beef that is cooked and served usually in a roll or bun
conqueror – n. a person who takes control of a country or city through the use of force
Anglo-Saxon – n. the language of the Anglo-Saxons
summary – n. a brief statement of the main points of something
