It is absolutely vital to stay properly hydrated.

保持适当的水分比例是绝对重要的.

It is absolutely vital that the matter is kept secret.

这件事要保密， 这是至关重要的。

It is absolutely vital that food supplies should be maintained.

维持食物的供给是绝对必要的。

This might be the hardest part but it is absolutely vital.

这一点可能是最难以做到的，但是它至关重要。

It is absolutely vital that the matter be keep secret .

这件事要保密，这是至关重要的。

Absolutely vital to the future of all our countries, and I thank you for your service.

险。但是，你们每天从事的工作对我们所有国家的未来都极其重要，我对你们的服务表示感谢。

Repetition is absolutely vital to learning most things but especially important when learning a language.

重复在学习大多数东西时都是绝对重要的，学语言时尤为重要。

It is absolutely vital that all nations, small or big, strong or weak, should conduct their relations with each other on these principles.

国无论大小、强弱，都应该在这些原则的基础上处理相互间的关系，这至关重要。