科学家们在海底发现了可能是巨齿鲨的巨大牙齿化石。

Scientists found giant fossilized teeth that likely belonged to a ___megalodon on the ocean floor.

这家电商平台已经成为零售业的巨无霸，几乎垄断了整个市场。

This e-commerce platform has become the ___megalodon of retail, dominating nearly the entire market.