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

大多数古生生活在富裕世界这一可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.

可争辩是，这颗牙是第一个鳄鱼目动拿恐龙当点心证据。