/rɪˈtriː.vəl/
the process of getting sth back, especially from a place where it should not be 取回；索回 SYN recovery
The ship was buried, beyond retrieval, at the bottom of the sea.
船已葬身海底，无法打捞。
figurative
By then the situation was beyond retrieval (= impossible to put right).
到那时，局势已无法挽回。