adv.向腹部，向前侧，腹向
Its sucking mouth was in a terminal rather than a ventral position.
它的吸嘴位于末端,而不在腹部.
The ventral nerve cord is covered externally by a peritoneum.
腹神经线外被以腹膜.
a fish's ventral fin
鱼的腹鳍
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