英文關鍵字
bio
biochemistry
biohazard
black
caution
chemistry
crime
criminology
danger
dangerous
death
deathly
experiments
hands
harmful
hazard
hazardous
irritant
lab
laboratory
life
mark
mask
medical
microbiology
poison
poisonous
polluted
portrait
precaution
prevent
protection
protective
respirator
robe
safety
scientific
scientist
secret
showing
sign
substances
symbol
threat
toxic
toxicity
triangle
warning
weapons
woman