这片森林在火灾后开始自然再生。

The forest has started natural ___regeneration after the wildfire.

他的旅行经历带来了一次精神上的重生。

His journey brought about a ___regeneration of his spirit.

这个老工业区的再生项目将新建公园和住宅区。

The ___regeneration project in this old industrial zone will include new parks and residential areas.