irretrievable
adjective uk/ˌɪr.ɪˈtriː.və.bəl/ us/ˌɪr.əˈtriː.və.bəl/
无法纠正的，不能恢复的，无法挽救的
impossible to correct or return to a previously existing situation or condition
I agree things look difficult, but the situation is far from irretrievable. 我承认情况看起来不妙，但局势还远远没到无法挽救的地步。
The couple separated on the grounds of irretrievable breakdown (of their marriage). 这对夫妇因（婚姻）关系破裂无法挽回而分居。