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A backward flow of air, as from the propeller of an aircraft.
被飞机螺旋桨驱向后方的空气湍流.
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The backward flow of blood through the valve is called mitral valve regurgitation.
这种血液的反向流过瓣膜称为“二尖瓣反流”.
The backward flow of blood is called regurgitation ( re - GUR - ji - TA - shun ), and it lead to symptoms and complications.
血液的向后流动称为 反 流, 而这种反流会引起许多症状或并发症.
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