这名罪犯因谋杀罪被判终身监禁且不得假释，成为了一名无期徒刑犯。

The criminal was convicted of murder and became a ___lifer with no possibility of release.

这位将军在陆军服役了40年，是公认的终身军人。

The general, who served in the Army for 40 years, was a recognized ___lifer.