underprivileged

US /ˌʌn.dɚˈprɪv.əl.ɪdʒd/
UK /ˌʌn.dɚˈprɪv.əl.ɪdʒd/
1.

弱勢群體

without the money, possessions, education, opportunities, etc. that the average person has:

:
Children from an underprivileged family background are statistically more likely to become involved in crime.