英文關鍵字
city
indoors
landmark
metro
moscow
motion
moving
people
public
railroad
russia
russian
speed
station
subway
train
transportation
travel
tunnel
underground
urban
vehicle
英文關鍵字
city
indoors
landmark
metro
moscow
motion
moving
people
public
railroad
russia
russian
speed
station
subway
train
transportation
travel
tunnel
underground
urban
vehicle