英文關鍵字
2019ncov
air
airport
biohazard
business
businessman
call
caucasian
cell
cellphone
city
communicate
communication
coronavirus
covid19
disease
epidemic
flu
gloves
holding
hygiene
infected
infection
infectious
male
man
mask
medical
mobile
ncov
outbreak
phone
pollution
protect
protection
protective
quarantine
respirator
respiratory
sarscov2
smart
smartphone
speak
talk
telephone
uses
using
virus