Dreye权威释义 | troposphere

n.

a.

tropospheric

同义参见:

以上来源于：《英汉大辞典》

/ˈtrɒpə(ʊ)sfɪə, ˈtrəʊp-/

n.

the lowest region of the atmosphere, extending from the earth's surface to a height of about 6–10 km (the lower boundary of the stratosphere).

early 20th cent.: from Gk tropos ‘turning’ + sphere.

以上来源于：《简明牛津英语词典》