The researchers also looked at a structure called the lagena.

研究人员还观察了一种叫做听壶的结构。

The longer the lagena, the better hearing an animal has.

听壶越长，动物的听力就越好。

Shuvuuia also has a very long lagena, almost the same in relative size to a barn owl's.

鸟面龙的听壶也很长，大小几乎和仓鸮的一样。

The lagena is a curved sack that sits in an area of bones around the brain.

听壶是一个弯曲的囊状物，位于大脑周围的骨骼区。

The barn owl can hunt even in total darkness and has the longest lagena of any living bird, relative to its size.

仓鸮即使在完全黑暗的环境中也能捕食，就体型而言，仓鸮的听壶是所有现存鸟类中最长的。