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、、内、脑干和大脑。

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：1.2.3.内为了方便记忆，再次被分成 3 个部分。

Snakes haven't got very good eyesight, and they haven't got external ears, so they pick up vibrations through the ground.

蛇类视不佳，它们也没有，所以它们通过地面感知震动。

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、、略呈锥形的结缔组织膜是和之间的边界。

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

我们的会将声音向内传送，但许多猫头鹰是用整张面庞将声音由传到内。

The external ear openings of most land animals became less useful.

大多数陆地动物的孔变得不再有用。

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。