Here, the crucial concept is the network - whose impact on politics has been a long time coming.

For "heaven" we can read any and all of the other religious concepts, including the crucial concept of "God".

A crucial concept underlying the proposals is that all students can learn mathematics.

This paper identified urban space that is loved by its inhabitants, enough to be defended against encroachment and degradation, as a crucial concept.

The crucial concept in physics theories is the order parameter.

The crucial concept here is high nutrition in a small amount of space.

Load transfer is a crucial concept in understanding vehicle dynamics.

When the crucial concept of collective security was put to the acid test in the 1930s, it dissolved.

He demonstrates that spontaneity is a crucial concept in relation to every aspect of Kant's thought.

A crucial concept behind social collaboration is that 'ideas are everywhere.'