segregation of olefines

例句：

1. 1. The school hasa policy of segregating students byrace.
   学校有一项政策，根据种族将学生分开。
2. 2. Thegovernment is considering a planto segregate schools basedon income.
   政府正在考虑一项计划，根据收入将学校分开。
3. 3. The teacherexplained the concept of segregation inhis lesson.
   老师在他的课上解释了隔离的概念。