exosphere
US /ˈek.soʊ.sfɪr/
UK /ˈek.səʊ.sfɪər/
名詞
外逸層, 散逸層
the outermost region of a planet's atmosphere, where the air is extremely thin and molecules can escape into space
範例:
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Satellites often orbit within the exosphere where there is very little atmospheric drag.
衛星通常在外逸層內運行，那裡的大氣阻力非常小。
•
The exosphere is the final layer of Earth's atmosphere before reaching outer space.
外逸層是地球大氣層到達外層空間之前的最後一層。