他的记忆受到了无法补救的损害。

His memory suffered irremediable damage.

《柯林斯英汉双解大词典》

母亲现在离我而去了，我将永不能再见她一面了，这个悲哀是无法补救的。

Mother is gone and I shall never see her again. This is an ever-lasting sorrow.

youdao

宽容的父母更喜欢给孩子很少限制的自由，并常常认为错了的事情是无法补救的。

Permissive parents prefer the freedom of few restrictions and often believe that what goes wrong couldn't be helped.

youdao