They are noisy and have poor efficiency and poor control.

它们噪音大，效率低下，控制能力差。

The reforms are expected to allow non-state capital investment in more state projects and address the preferential treatment and poor efficiency of state-owned enterprises.

此次改革将有望让非国有产业在国有项目中进行投资，并解决优待政策以及国有企业效率低问题。