For example, open windows frequently for ventilation, popularize epidemic prevention knowledge, perform regular disinfection, and all teachers and students in the school wear masks and wash hands, and conduct closed management.
For example, often open windows ventilation, popularize epidemic-related knowledge of epidemic prevention, regular disinfection, the whole school teachers and students wear masks and cleaning hands, and closed management.
For example, regular window ventilation, popularization of epidemic prevention knowledge, regular disinfection, teachers and students wearing masks and cleaning hands, and closed management.<br>