ventral rib

例句：

1. 1. The ventral ribs of the turtle are used to help it walk on land.
   乌龟的腹侧肋帮助它行走。
2. 2.During the mating season, male birds use their ventral ribs to attract females.
   在求偶季节，雄性鸟使用它们的腹侧肋来吸引雌性。
3. 3.In some species, the ventral ribs can be modified into a hook or barb for defense against predators.
   在一些物种中，腹侧肋可以被改造成钩或刺以抵御捕食者。