An atmosphere (fromGreekἀτμός (atmos), meaning "vapour",andσφαῖρα (sphaira), meaning "sphere") is a layer of gases surrounding a planet or other material body, that is held in place by the gravity of that body. An atmosphere is more likely to be retained if its gravity is high and the atmosphere's temperature is low.
近义、反义、联想词
近义词
n.
condition, status, pressure unit, region, part, weather, weather condition
解析
atmosphere 指围绕有的星球,特别是围绕地球的空气,即大气层。也可指环境气氛。 air 指空气,也泛指一般气体。 gas 指气态物,尤指供燃烧取暖或照明的气体,其中一部分称作瓦斯。