while I'm alive; as long as I live
Idiomatic expression used to strongly assert that something will not happen or will not be allowed during one's lifetime. Often used in the pattern 〜うちは…ない.
I won't allow such a thing as long as I live.
目の黒いうちは、この土地を手放すつもりはない。
I have no intention of letting go of this land while I'm alive.