hy·drol·o·gy /haɪˈdrɑləʤi/
水文學
hy·drol·o·gy /haɪˈdrɑləʤɪ/ 名詞
水文學,水學
Hy·drol·o·gy n. The science of water, its properties, phenomena, and distribution over the earth's surface.
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hydrology
n : the branch of geology that studies water on the earth and in
the atmosphere: its distribution and uses and
conservation