1. blockage of the pulmonary artery by foreign matter or by a blood clot. 
   由异质或血凝块造成的肺动脉阻塞。
2. the contraction of the chambers of the heart (especially the ventricles) to drive blood into the aorta and pulmonary artery. 
   心脏各室的收缩，收缩时把血液压入大动脉和肺动脉。
3. The chamber on the right side of the heart that receives venous blood from the right atrium and forces it into the pulmonary artery. 
   右心室位于心脏右侧的心室，从右心房接收静脉血并把血压入肺动脉
4. 1.THE LAWS OF WAR ARE DEVELOPMENTAL  
   第一节战争规律是发展的
5. Of or relating to the lungs; pulmonary. 
   属于或有关肺的；肺部的

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• 1. 肺动脉异常起源或发育异常
  肺动脉异常起源或发育异常||abnormal origin or developmental abnormaly of pulmonary artery...肺隔离症||pulmonary sequestration
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