id	keyword
ger-160	education
ger-160	china
ger-160	urban
ger-160	schools
ger-160	urbanization
ger-160	teachers
ger-160	state
ger-160	areas
ger-160	students
ger-160	development
ger-160	people
ger-160	jiaoyu
ger-160	government
ger-160	national
ger-160	migrant
ger-160	policy
ger-160	china education
ger-160	economic
ger-160	press
ger-160	workers
ger-160	yearbook
ger-160	central
ger-160	university
ger-160	beijing