Sentences with Backflow

The swimming pool had a backflow preventer to ensure water didn't flow back into the clean water supply.

The teacher explained to the students that backflow occurs when blood moves backward in the heart, disrupting the normal flow.

The dentist explained that maintaining good oral hygiene helps reduce the risk of backflow of bacteria from the mouth into the bloodstream.

The swim coach emphasized proper breathing technique to avoid backflow of water into the swimmers' nasal passages.

The fitness trainer emphasized the importance of proper breathing techniques to prevent backflow of air during intense workouts.