释义 |
ventral fin ˈventrəlfin 短语¹⁴⁴⁹⁷²⁺² 基本英英近义反义例句 n.鱼腹鳍
Noun: either of a pair of fins attached to the pelvic girdle in fishes that help control the direction of movement; correspond to hind limbs of a land vertebrate近义词 pelvic fin腹鳍 By30 days, the bud of ventral fin appeared; 孵出后第30天,腹鳍芽出现; cnki |