Its outer surface was stained, as if from a blast of heat, but the shell had not cracked or shattered.

As he cried, his tears fell upon them and the shells cracked open.

God knows how many shells and bullets crack into this city every day.

The last shells cracked and we heard a car pull into the driveway, radio blaring.

But he also makes it inevitable that the shell will crack.

The hard shell cracked, and more lightning danced along the fault lines.

By the end of the film, however, that shell has cracked.

When the shell cracked and opened, there was always pain.

We need a lower pressure, or our shell will crack, um, prematurely.

I heard small shells crack under my shoes, and the sand made whipping noises.