但是，在所有食肉动物中，下犬牙位于颌的前面，只有当嘴张大时上犬牙才能暴露出来。

But in all carnivores, the lower canines are in the front of jaws, and only if the mouth is wide open are the upper canines exposed.

youdao

但是，在所有食肉动物中，下犬牙位于颌的前面，只有当嘴张大时上犬牙才能暴露出来。

But in all carnivores, the lower canines are in the front of jaws, and only if the mouth is wide open are the upper canines exposed.

youdao