Was heißt »lebenswichtig« auf Englisch?

Das Adjektiv lebenswichtig lässt sich wie folgt von Deutsch auf Englisch übersetzen:

Deutsch/Englische Beispielübersetzungen

Die Aufzüge eines Wolkenkratzers sind lebenswichtige Systeme.: The elevators in a skyscraper are vital systems.
Ich gestatte alle Angriffe, außer auf lebenswichtige Organe.: I'm allowing all attacks except on vital organs.
Gesichter lesen zu können ist eine lebenswichtige Fertigkeit.: The ability to read faces is an essential skill.

To treat disease successfully, it is vital to detect it early.
Learning new aspects of a subject is vital.
A win tonight is vital to stave off the threat of relegation.
The Nile is the vital artery of Egypt.
It is important to make sure that any exchanges are to your advantage in the long term, so planning is vital.
When I have pluck’d thy rose, I cannot give it vital growth again; it must needs wither. I’ll smell it on the tree.
To my certain knowledge he has acted on behalf of three of the reigning houses of Europe in very vital matters.
When I have plucked thy rose, I cannot give it vital growth again. It must needs wither.
This is a vital decision for the future of our country.
It is vital that you be present.
Her vital signs are being closely monitored.
A healthy dose of skepticism is vital when listening to a politician speak.
Water is a natural resource of vital importance.
In sport, team harmony is vital to success.