热成层之后是热成层顶，它是热成层的最外边界。
After the thermosphere is the thermopause, which is the outer most boundary of the thermosphere.
中间层顶后是热成层，它是因为这里的高温而得名的。
The next layer in the atmosphere is thethermosphere named for its high temperature.
中间层顶后是热成层，它是因为这里的高温而得名的。
The next layer in the atmosphere is thethermosphere named for its high temperature.
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