VOA慢速英语:Glider Plane to Soar Stratosphere for Data

altitude – n.  the height of something such as an airplane above the level of the sea

atmosphere – n. the whole mass of air that surrounds the Earth

meteorologist – n. a scientist who deals with the atmosphere and with weather

stratosphere – n. the upper layer of the Earth’s atmosphere that begins about 11 kilometers above the Earth’s surface and ends about 50 kilometers above the Earth’s surface