exosphere

Above the troposphere is the stratosphere, followed by the ionosphere and capped by the exosphere.

在对流层上是平流层, 接着是电离层,最上层是外逸层.

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Last is the exosphere, which is outermost layer of the atmosphere.

最后是散逸层, 这是大气的最外层.

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This region is called exosphere.

这层大气称为外逸层.

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