bbc英语听力：City children suffering more-Words

slums
very poor areas of a city with bad living conditions

vulnerable
exposed to harm

identity
details that state who someone is

exploited
treated unfairly for profit

traffickers
people who illegally transport and sell goods or people

plight
difficult situation

amenities
facilities or services in a building or place

booming
fast-growing

consciously
think specifically about

grass roots
at a local level