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出典:Wiktionary
hydro- + -sphere
hydrosphere (複数形 hydrospheres)
出典:Wikipedia
出典:『Wikipedia』 (2011/07/07 20:17 UTC 版)
A hydrosphere (from Greek ὕδωρ - hydor, "water" and σφαῖρα - sphaira, "sphere") in physical geography describes the combined mass of water found on, under, and over the surface of a planet.
名詞の変化形:
hydrosphere