All the molecules contained within are colliding constantly.

The micellar structures are dynamic and constantly colliding with one another, exchanging contents.

Due to the stable work of the majority of the large enterprises, the city constantly collides with environmental problems.

The rapidly moving particles constantly collide with each other and with the walls of the container.

The rapidly moving particles constantly collide among themselves and with the walls of the container.

They constantly collide, these notions.

The chunks of rock in the field are moving at rapid speeds, constantly colliding, and densely packed.

Today, we all constantly collide with persons living in wildly different tunnel-realities.

They roll weights representing their wealth, constantly colliding and quarreling.

So the current of electrons moved in a slow diffusion process, constantly colliding with gas molecules, never gaining much energy.