| 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 |