英文關鍵字
animal
background
blurred
bush
caucasian
chemical
children
closeup
danger
day
decontamination
disinfectant
disinfection
ecology
environment
epidemiologist
forest
gloves
grass
hazard
hazmat
health
infestation
insect
job
local
mature
medicine
nature
person
precaution
prevention
protection
protective
put
repellent
respirator
safety
sanitize
service
spray
sunny
tick
uniform
white
worker