improve economic performance的用法和樣例：
例句
- Arduous efforts have to be made to attain this target through better economic performance.
要在提高效益的基礎上實現這個目標，必須付出艱巨努力。 - This will help focus efforts on restructuring and improving economic returns, and also prevent an overheated economy and poor quality or redundant development.
這樣，有利於引導各方面把主要精力放在調整結構和提高效益上，也有利於防止經濟過熱和低水平重複建設。
