- an atmospheric layer lying between the mesosphere and the exosphere, reaching an altitude of about 400 kilometres where the temperature is over 1000°C
| 单词 | thermosphere |
| 释义 | WordReference Random House Unabridged Dictionary of American English © 2024 ther•mo•sphere (thûr′mə sfēr′),USA pronunciation n.
Collins Concise English Dictionary © HarperCollins Publishers:: thermosphere /ˈθɜːməˌsfɪə/ n
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