As a nationally recognized standard of achievement, passing an AP course is a mark of success for both students and schools.
作为全国公认的成就标准，通过 AP 课程对学生和学校来讲都是成功的标志。
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During the course of this exhaustive study, Reznikova has grown so attached to her laboratory ants that she feels she knows them as individuals—even without the paint spots used to mark them.