VOA慢速英语:中国最近一次登月是太空发展的一个标志

sample – n. a small amount of something that represents what it is like

mission – n. a flight by an aircraft or spacecraft to perform a specific task

transform – v. to change something completely usually in a good way

benefit – n. a good or helpful result or effect

GPS – n. (abbreviation for global positioning system) - a radio system that uses signals from satellites to tell you where you are and to give you directions to other places

publicity – n. the activity of making sure a person or thing attracts a lot of interest and attention from many people