Larralde is not much known because he has shunned promotions and massive concentrations.

Spread out around the area they could see, were occasional massive concentrations of strange equipment.

Also, satellite imagery shows a massive concentration of troops on the border with South Korea.

Against any normal enemy, that massive concentration of power would have been impregnable.

Another thing that's been happening is massive concentration in the retail food market.

First, they feared the "massive concentration of economic power" that would entail.

The vulnerability of the Council, and the massive concentration of city around it, was enough to make a stone paranoid?

But then the last room in the academy, with its massive concentration of late paintings, now looks not at all outrageous.

From what she's told me about the way her empathy works, sometimes it takes massive concentration to maintain control.

All previous invasion attempts had been betrayed by the massive concentration of troops and ships begun long in advance.