WHO (World Health Organization)

World Health Organization

artificial satellite

guard

defend one's home and country

defend

personal hygiene

avant-garde

David

guard

bureaucrats shield one another, nowadays, it means cover for each other

guard

defend

sanitation worker

physiological health (this term is normally used as a more discrete way to refer to sex education)

Red Guards

self-defense

defend a title

defend the country

Garrison

Wesley / Wisely, a fictional protagonist of a series of science fiction adventure novels written by the Chinese novelist Ni Kuang

satellite

satellite picture

satellite images

Satellite Communications

Hygiene

Health Conditions; sanitary conditions

toilet paper

Health Department

bathroom