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单词 thermosphere
释义
ther·mo·sphere (thûrmə-sfîr)
n.
The outermost layer of the atmosphere, between the mesosphere and interplanetary space, where air becomes extremely thin and temperatures increase steadily with altitude.

thermo·spheric (-sfîrĭk, -sfĕrĭk) adj.
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更新时间:2026/5/30 7:11:44