catadromous
catadromous[kaˈtadrəməs]adjective- (Zoology)(of a fish such as the eel) migrating down rivers to the sea to spawn
(动)(如鳗鲡等鱼类)下海繁殖的,下行的。 anadromous的反义词
语源- late 19th cent.: from cata- 'down' + Greek dromos 'running', on the pattern of anadromous
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