虽然该产品功能齐全，但其用户界面设计仍有很大的改进空间。

While the product is functional, there is significant ___room ___for ___improvement in its user interface design.

经理承认团队的沟通过程还有改进的余地。

The manager acknowledged that the team's communication process had ___room ___for ___improvement.

她的文章结构很好，但分析的深度显示出还有提升的空间。

Her essay was well-structured, but the depth of analysis showed ___room ___for ___improvement.