1.school district學(xué)區(qū)
2.desegregate:officially stop keeping people who use it in seperate group, especially race.廢除種族歧視~segregation:種族隔離
3.constitutional:relating to the constitution of a particular country.有關(guān)憲法的#constitution憲法#unconstitutional違憲的
4.supreme court最高法院
5.previous version以前的版本