英语语法分析

Fossilized remains of Acanthostega, a primitive fish, reveal that even though the animal had rudimentary limbs, it could not walk on land.

棘螈是一种原始鱼类，它的化石遗迹显示，尽管棘螈有基本的四肢，但它却不能在陆地上行走。

He received rudimentary village schooling, but mostly he roamed his uncle's farm collecting the fossils that were so abundant in the rocks of the Cotswold hills.

他只在乡村学校接受了最基本的教育，但大部分时间都在叔叔的农场里游荡，收集科茨沃尔德丘陵中充裕的化石。

Some dinosaurs had only rudimentary teeth.

有些恐龙只有未充分长成的牙齿。

《牛津词典》