当心瓣有缺陷时，左心室的每次跳动都不能把血液完全泵出。
When heart valves become defective, blood in the left ventricle will not be completely pumped away in each heart beat.
每次听到篮球击打在地板上的声音，我的心就会跟着它的节拍跳动。
When I hear the sound of the ball hitting the floor, my heart follows4 its beat.
当太阳升起的时分，白大都要做早训练，一蹦一跳的，每次越过阿木的枯树枝，阿木紧张得心脏扑扑跳动。
When the sun rises after midnight, the white majority to do early training, hobbled down, each of dry branches across the Amu, Amu nervous scarred heart beating.
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