(2) At present, there are methods to detect similarity, so it is suggested to rearrange the layout and change the language wording.

For example:

Generally, people in the epidemic range of infectious diseases are divided into three categories: class S, susceptible people, which refer to people who are not sick but lack immunity and are susceptible to infection after contact with infected people; Class I, infectious, refers to people infected with infectious diseases, which can be transmitted to class S members;

Modify:

Usually, people within the epidemic range of infectious diseases are divided into three categories, namely:

Class s, susceptible, refers to the lack of immunity without illness, and is more susceptible to infection after contact with infected people;

Class I, infectious, refers to people infected with infectious diseases, which can be transmitted to class S members;

. . .