| 释义 |
tro·po·sphere
\ˈtrōpəˌsfi(ə)r, ˈträp-, -iə\ noun
Etymology: International Scientific Vocabulary trop- (I) + sphere
: the portion of the atmosphere that is below the stratosphere, extends outward about 7 to 10 miles from the earth's surface, and is the portion in which temperature generally rapidly decreases with altitude, clouds form, and convection is active |