构造上的

例句：

1. 1. The project is very constructive in improving the community's infrastructure.
   这个项目在改善社区基础设施方面非常具有建设性。
2. 2.The teacher's feedback was constructive and helped me understand my mistakes better.
   老师的反馈很有建设性，帮助我更好地理解了我的错误。
3. 3. The new policy is constructive and will benefit everyone involved.
   新政策很有建设性，将惠及所有参与者。