6 sentences with “indispensable”

To make perfect pizzas, such an oven is indispensable, as it has to bake a pizza in just one minute.

Proteins are an essential part of the cellular structure and are indispensable for the maintenance of life processes.

-Each of those file cabinets," he replied, trying to keep his voice calm, "plays an indispensable role in the F&S system.

Ozone gas, made up of three oxygen atoms, is harmful at sea level, but indispensable at an altitude of 12 to 25 kilometres, in the lower stratosphere, where it reaches its highest concentration (12 parts per million).

"Reasoning is not a substitute for information, nor is information a substitute for reasoning," observes de Bono. "Both are indispensable for intellectual development. It is impossible to discover a new application for second-degree equations if you have not learned these equations.

All existence (people and animals) - the study indicated - requires great energy, and for this energy to be able to act, a "hidden force" of various sounds is indispensable. That is to say that if one can concentrate one's attention on a material "tone" (on a conscious or unconscious level), the invisible force of sound will act on each one.