The unarguable fact that most palaeontologists live in the rich world means two things.

大多数古家活在富裕世界这一争议事实意味着两件事。

Nevertheless, this tooth is the first unarguable proof that crocodilians did indeed snack on dinosaurs.

争辩是，这颗牙是第一个鳄鱼目动拿恐龙当点心证据。