progressive principle

例句：

1. 1. Thecompany is making progress in its new product line.
   该公司在其新产品线上取得了进展。
2. 2.The economy is showing progressive signs of recovery.
   经济正在显示出复苏的积极迹象。
3. 3.The team has made significant progress in their research project.
   团队在他们的研究中取得了重大进展。