These particles can embed themselves deep in the lungs and occasionally enter the blood stream.

It is most often seen in large rivers, occasionally entering flooded fields.

These vehicles occasionally enter revenue service to mark special occasions.

Other local and state governments occasionally enter into special contracts with security agencies to provide patrol services in public areas.

He will occasionally enter professional rodeos to satisfy his competitive nature.

American tanks and Bradley vehicles occasionally entered the area, but pulled back when they drew fire.

A popular show, it occasionally entered the Korean top 20 chart.

Sometimes pedestrians would occasionally enter and ride in taxis or buses.

The story is filled with sadness, though humor enters occasionally to give balance.

The alien occasionally enters the room, makes threats, then leaves so the residents can contemplate her words.