compulsory fees

例句：

1. 1. The school requires all students to wear uniforms.
   学校要求所有学生都穿校服。
2. 2. Compulsory education is a fundamental right for every child.
   义务教育是每个孩子的基本权利。
3. 3.The government has introduced compulsory vaccination for children under 12 years old.
   政府已经为12岁以下儿童引入了强制性疫苗接种。