a large group of people
crowd (n): Đám đông
a large number of vehicles close together
traffic jam (n): ách tắc giao thông
land in a town or city
green space (n): không gian xanh
words or drawings
graffiti (n): vẽ bậy, viết lên tường
damage caused to water, air, etc.
pollution (n): ô nhiễm
the busy part of the day
rush hour (n): giờ cao điểm
damage caused to water, air, etc
rubbish (n): rác
system of vehicles that operate at regular times
public transport (n): phương tiện giao thông công cộng
an interruption in the supply of electricity
power cut (n): mất điện