例文
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- Most assist pumps help the left ventricle, the heart's main pumping chamber.
- The abnormality prevents the heart's pumping chambers from squeezing at the same time.
- The end result is an organ with one pumping chamber instead of two.
- People who need both pumping chambers, or ventricles, replaced need a total artificial heart.
- A large hole between the heart's two pumping chambers, or ventricles, also is present.