In total this process involves your external ear, middle ear, inner ear, brainstem and brain.

总的来说，这个过程涉及你的外、中、内、和大。

Our external ears funnel sounds inward, but many owls use their whole faces to do this.

我们的外会将声音向内传送，但许多猫头鹰是用整张面庞将声音由外传到内。

This ultra-sensitive, translucent, and slightly cone-shaped membrane of connective tissue is the boundary between the external and middle ear.

这种超敏感、透明、略呈锥形的结缔组织膜是外和中之间的边界。

Sphenodontians had two openings in the skull behind their eyes, no external ears, and a fixed jaw bone.

蝶齿兽在眼睛后面的头上有两个开口，没有外和固定的。

Plus they have external ears, and a moveable bone in the upper jaw that allows for a wider gape.

此外，它们还有外，上有一块可移动的头，可以张开更大的嘴巴。

It also connects the ribs to the sternum (breastbone) and provides a structural base for the nose and the external ear.

肌肉系统使身体得以移动，其收缩产生的热量有助于（机体）保持恒定的体温。

The ear is divided into 3 parts: 1. External ear 2. Middle ear 3. Internal ear The external ear is again divided into 3 parts which will make it easier to remember.

朵分为 3 个部分：1.外2.中3.内为了方便记忆，外再次被分成 3 个部分。