单词 | exosphere |
释义 | > as lemmasexosphere exosphere n. Brit. /ˈɛksə(ʊ)sfɪə/ , U.S. /ˈɛksəˌsfɪ(ə)r/ the layer of the atmosphere farthest from the earth.ΚΠ 1951 Jrnl. Brit. Interplan. Soc. 10 18 The atmosphere can conveniently be divided into four parts, the troposphere, the stratosphere, the ionosphere and the exosphere. 1955 E. Burgess Frontier to Space 150 The density and extent of the exosphere. 1969 Sci. Jrnl. May 67/1 The lunar atmosphere is a true exosphere in direct communication with space, to which its molecules can escape freely unless inhibited by gravity. < as lemmas |
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