VOA慢速英语:Sky Watchers: Look Out for ‘Supermoon’(翻译)

elliptical – adj. shaped like a flattened circle, an oval

astrologer – n. a person who studies how the positions of the stars and movements of the planets have a supposed influence on events and on the lives and behavior of people

beaver – n. a small animal that has thick, brown fur and a wide, flat tail, that cuts down trees with its teeth, and that builds underwater houses … its fur is very warm and was used by people for coats in the winter

Algonquin – n. the name of one of the native American tribes in the U.S.

swamp - n. land that is always wet and often partly covered with water