A bird's beak is the hard, pointed part of its mouth.

鸟的喙是鸟嘴硬而尖的那部分。

The Hyperoodon bidens is destitute of true teeth in an efficient condition, but its palate is roughened, according to Lacepede, with small unequal, hard points of horn.

Hyperoodon bidens 在有效条件下缺乏真正的牙齿，但根据 Lacepede 的说法， 它的上颚粗糙， 具有不等的小硬角点。