mesosphere

名词 mesosphere:

1. the atmospheric layer between the stratosphere and the thermosphere

mes.o.sphere

n.（名词）
The portion of the atmosphere from about 30 to 80 kilometers (20 to 50 miles) above the earth`s surface, characterized by temperatures that decrease from 0=C to -90=C (50=F to -30=F) with increasing altitude.
散逸层：离地球表面约30至80公里（20－50英里）处的空气部分，其特征是随着高度的增加，气温从0=C降到－90=C（50=F－30=F）

【引伸】
mes.ospher.ic