设备的损坏是由于长期使用导致的磨损。

The damage to the equipment was caused by long-term wear and ___tear.

他的进步很明显，大家都为他高兴。

His ___improvement is noticeable, and everyone is happy for him.

这个新项目将促进城市的发展。

This new project will enhance the city's ___development.