zero graduation

例句：

1. 1. The company's revenue has been zero for the past five years.
   这家公司过去五年的收入为零。
2. 2. The project has achieved zero graduation in the first year.
   该项目第一年实现了零毕业。
3. 3. The students have achieved zero graduation in their final exams.
   学生们在期末考试中实现了零毕业。