In those demonstrations, the police are usually unarmed except for powerful tear-gas cannons.

Cannon development had been neglected by the government, so Yi developed more powerful cannons with longer range for the navy.

Even the most powerful cannon is not much use if its crew has been squashed by a boulder.

Mark I tank-These can move on any terrain and have a powerful cannon.

Roaring Meg was the name of several powerful cannons used in the 17th century.

By the Tudor period, the science of fortification had change to deal with powerful cannons.

The additional armor prompted the design of even more powerful cannons.

They frequently carry powerful cannons which make them useful in sieges.

The nozzles of its powerful cannon gleamed like polished silver.

In the original game, a powerful cannon is protected by three layers of counter-rotating shields.