1-hovac 破坏

But just what causes the hovac?

2-respiratory tract 呼吸道

Influenza causes an infection in respiratory tract, or nose, throat and lungs.

3-mucous membrane 黏膜

The virus is transmitted, usually via your fingers, to the mucous membrane of the mouth, nose or eyes.

4-adjacent 临近的

Once matured, they are released from the cell and can then go on to invade the adjacent cells.

5-innate immune system 先天免疫系统

The initial immune response involves cells of the body's innate immune system.

6-receptor 受体

These cells express receptors that are able to sense the presence of the virus.

7-protein 蛋白质

8-proliferate 激增

9-lymph node 淋巴结

When T cells specifically recognize influenza virus proteins, they begin to proliferate in the lymph nodes around the lungs and throat.

10-reflex 本能反应，条件反射

In addition, the immune response induces coughing as a reflex to try to clear the airways.

11-rest assured 放宽心

Thus, while you feel miserable when you have an influenza infection, you can rest assured that it is because your body is fighting hard.