When the fur is pushed down flat against the cat's skin, the distance is the same as the length of the papillae, she discovered.

她发现，当猫的皮毛被理顺到皮肤上时，皮毛到皮肤的距离与乳突长度相等。

Zooming in revealed that the papillae have a U-shaped cavity at their tips, which has a wicking effect and helps carry droplets of saliva through that top layer of fur down to the cat's skin.

放大后发现，乳突的尖端有一个 U 形腔，它具有芯吸作用，有助于将唾液滴通过最上层的皮毛带到猫的皮肤上。