progressive average

例句：

1. 1. The company has made significant progress in its development efforts.
   该公司在其发展努力上取得了显著进展。
2. 2. The project is on a progressive path towards completion.
   该项目正按计划逐步推进直至完成。
3. 3. The students are making progressive improvements in their studies.
   学生们在学习上正在取得逐步的进步。