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

古生物学家生活在富裕世界这一无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.

但无可争，这颗牙第一个鳄鱼目动物拿恐龙当点心证据。