1、Some species of snakes are acoelous, meaning they do not have eyes.
一些蛇的物种是无眼的，意味着它们没有眼睛。

2、The acoelous fish has adapted to its dark environment by relying on other senses for navigation.
这种无眼的鱼类通过依赖其他感官进行导航，适应了黑暗的环境。