fluid

◎◎◎ fill ⪢⪢
Pneumonia is a dangerous illness causing the lungs to fill with fluid.
http://qindex.info/i.php?x=12463

○○○ enhance ⪢⪢
Highly mobile joints in their shoulders and wrists _____ their fluid movement.
http://qindex.info/i.php?x=28279

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