不太懂manhattan 6th chapter4 Subordinators从属连词 “, DAMAGE THAT”如何理解啊？？

ddawannn

Wrong: Citizens of many countries are expressing concern about the environmental damage caused by the widespread release of greenhouse gases may be impossible to reverse.

Right 1: Citizens of many countries are expressing concern THAT the environmental damage caused by the widespread release of greenhouse gases may be impossible to reverse.

Right 2: Citizens of many countries are expressing concern about the environmental damage caused by the widespread release of greenhouse gases, DAMAGE THAT may be impossible to reverse.

我知道 “may be impossible to reverse” 是修饰 damage的，
但是在Right 2中 “  ， damage that ” 应该怎么理解啊？ 为什么要加 “  ， ” 而且还要在后面重复damege？？是重复性同位语吗？

谢谢！！！

几许VV

damage是同位语，that是修饰damage的定语从句。

ddawannn

谢谢！