1.  Pumps in the backpack circulated water round the pipes without loosing significant amounts.

2.  A pump circulates the water through the filter.

3.  A system of pipes and canals circulates water through the ponds.

4.  After cooking, they were rinsed in circulating water to separate the crab shell from the meat, Ms. Gray explained.

5.  Early hot-water systems relied on gravity to circulate the water.

6.  In June of that year, inspectors ordered repairs to a pump that circulates water in the baboon area and to a door in the rhino area.

7.  The cap that doctors put on his head was lined with tubes circulating cool water.

8.  The inner part of the suit is a fabric overall in which long, plastic tubes were sewn to circulate cooling water.

9.  The livewell in a modern bass boat has pumps to circulate water to make sure the bass are not killed.

10.  The motion circulates the water south and draws more warm water north.