| 单词 | the stratosphere | 
| 释义 | the stratospherenoun1   : the upper layer of the Earth's atmosphere that begins about 7 miles (11 kilometers) above the Earth's surface and ends about 30 miles (50 kilometers) above the Earth's surface   2   : a very high position, level, or amount  Tuition at many colleges has soared into the stratosphere. His career is clearly headed for the stratosphere. | 
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