1·It is often possible to see the vestigial remains of rear limbs on some snakes.
在某些蛇身上常可看到退化后肢的痕迹。
—— 《牛津词典》
2·Basilosaurus was undoubtedly a fully marine whale with possibly nonfunctional, or vestigial, hind legs.
龙王鲸无疑是一种完全海生的鲸鱼，它的后腿可能没有功能，或退化了。
3·The wings of the chicken have become vestigial; it can no longer fly.
鸡的翅膀逐渐退化， 不会在空中飞行了。
—— 《新英汉大辞典》
4·Because these structures can be traced back through the ancestors, they essentially serve as a marker of evolution; no organism can have a vestigial organ that hasn't been found in its forefathers.
由于这些结构的出现可以追溯到各代祖先，所以它们可以作为进化的标志；没有一个生物体身上的退化器官是祖先没有的。
5·Though unable to support a Basilosaurus's weight on land, these legs weren't completely vestigial.
虽然腿不能支撑龙王鲸在陆地上的体重，但是尚未完全退化。