Castoroides是拉丁语，意思是“巨型海狸”。它是一种已灭绝的海狸，生活在约300万年前的北美洲。
以下是9个含有Castoroides的例句：
1. Castoroides是一种已灭绝的巨型海狸，它在北美洲生活了数百万年。
Castoroides是一种已灭绝的巨型海狸，它在北美洲生活了数百万年。
2. 考古学家在加拿大发现了大量的Castoroides骨骼化石。
Archaeologists have found a large number of Castoroides fossils in Canada.
3. Castoroides有着强壮的牙齿和尾巴，能够帮助它们建造大型栖息地。
Castoroides had strong teeth and tails that helped them build large habitats.
4. 巨型海狸Castoroides已经灭绝了，但是它们对古生态系统的影响还在继续。
The extinct giant beaver, Castoroides, continues to have an impact on ancient ecosystems.
5. 一些科学家认为Castoroides的灭绝可能与气候变化有关。
Some scientists believe that the extinction of Castoroides may be related to climate change.
6. Castoroides是古代北美洲的主要食草动物之一。
Castoroides was one of the main herbivores of ancient North America.
7. Castoroides的牙齿非常锐利，可以轻松地啃食木头。
Castoroides' teeth were very sharp and could easily gnaw through wood.
8. Castoroides是一种社会性动物，它们生活在群体中。
Castoroides was a social animal, living in groups.
9. Castoroides的大型身体和巨大的尾巴使它们能够游泳得非常快。
Castoroides' large body and huge tail allowed them to swim very quickly.
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