The upper respiratory system includes the mouth, nose, nasal cavity, sinuses, and the pharynx.

上呼吸系统包括嘴、鼻子、鼻腔、鼻窦、和咽。

It's what separates the nasal cavity from the mouth.

它把鼻腔和口腔分隔开来。

On the other hand, rhinoviruses commonly infect the epithelium of the respiratory mucosa, which lines the nasal cavity.

另一方面，鼻病毒通常会感染鼻腔周围的呼吸道粘膜上皮细胞。

The vapours pass through your mouth, around the soft palate, into the nasal cavity and to the olfactory bulb.

蒸汽通过口腔，绕过软腭，进入鼻腔和嗅球。

This is your olfactory system's main organ — a small yellowish patch of tissue on the roof of the nasal cavity.

这是你嗅觉系统的主要器官——鼻腔顶部的一小片黄色组织。

When you breathe in, air flows through the nostrils and enters the nasal cavity which is lined by cells that release mucus.

吸气时，气流通过鼻孔进入鼻腔，鼻腔中有大量分泌粘液的细胞。

Turns out, the difference has to do with the conditions inside your nasal cavities.

事实证明，差异与鼻腔内的状况有关。

The conducting zone begins with the nose and nasal cavity.

传导区始于鼻和鼻腔。

The nasal cavity is connected to four sinuses which are air-filled spaces inside the bones that surround the nose, called the paranasal sinuses.

鼻腔和四个鼻窦相连，鼻窦是位于鼻腔周围含气的骨质腔，又称鼻旁窦。

Your vocal tract is basically the entire mechanism that shapes sounds from your vocal cord to your nasal cavity.

声道基本上是从声带到鼻腔塑造声音的整个机制。