megalodon
noun [ C ] uk/ˈmeɡ.əl.ə.dɒn/ us/ˈmeɡ.əl.ə.dɑːn/
（生活在几百万年前的）巨齿鲨
a very large shark that existed millions of years ago
For over 20 million years, a gigantic shark popularly known as megalodon stalked the world's oceans 在长达2000多万年的时间里，一种被称为巨齿鲨的巨型鲨鱼游弋在世界各地的海洋中。
Some megalodon teeth were over 7 inches long. 一些巨齿鲨的牙齿长度超过7英寸。
- More examples
- A full-grown megalodon could be up to 54 feet long.
- Our understanding of megalodon comes mainly from its teeth.
- Japan and North America have yielded megalodon backbones as well.