慢速英语:NASA公布有史以来最接近太阳的照片

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NASA – n. short for the National Aeronautics and Space Administration, the government agency responsible for the U.S. civilian space program

solar flare – n. a short burst of radiation from the sun's surface

swirl – v. to flow or move, like the wind, in the space of a circle

cousin – n. something related to another

dare – v. to be brave enough to face or do something; to not be too afraid to do something

mission – n. an important trip or project

pole – n. one of two or areas in a magnetized field; either of two related opposites

plasma – n. technical a substance that is similar to a gas but that can carry electricity