But even a proven path of success also needs improvement.
但即便是一条经过考验的成功之路，也总有需要改进之处。
I think it has technical problems, and still needs improvement.
我觉得高铁还存在技术问题，仍然需要改进。
Nowadays, technology for intelligent building is very well-considered whereas project management needs improvement urgently.
现在智能建筑的技术已经非常成熟，但是，智能建筑的项目管理水平急需提高。
Nowadays, technology for intelligent building is very well-considered whereas project management needs improvement urgently.
现在智能建筑的技术已经非常成熟，但是，智能建筑的项目管理水平急需提高。
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