英文關鍵字
white
business
travel
people
transport
vehicle
transportation
face
electric
technology
speed
road
traffic
modern
city
urban
window
engine
tourism
track
china
passenger
journey
train
public
station
bus
passengers
railway
platform
locomotive
railroad
rail
airport
lifeguard
epidemic
infection
evacuation
quarantine
epicenter
Wuhan
protests
protective mask
detainees
Emergency lights
coronavirus
911
covid 19