1·So when the atria contract, the valves sandwiched between the atria and the ventricles open, and the blood in each atrium flows through its respective valve down into a ventricle.
所以当你的心房收缩时，夹在心房和心室之间的阀门就打开了，然后每个心房里的血液通过各自的阀门流向心室。
2·But in the process, the heart ADAPTS and changes. Its left and right ventricles enlarge. It begins to look quite different than a non-athlete's heart.
但是在这个过程中，心脏出现了适应性改变：左、右心室扩大，从形态上开始与那些非运动员的心脏有了很大差异。
3·Atrioventricular valves lie between the atria and ventricles, and semilunar valves are located at the bases of the two large vessels leaving the heart.
房室瓣放在心房和心室和半月瓣之间位于离开心脏的二艘大船的基地。
4·Yet on maximal vagal stimulation, both atria and ventricles come to a standstill.
然而，以最大刺激作用于迷走神经时，心房和心室都停搏。
5·When the heart contracts, the chambers become smaller, forcing blood first out of the atria into the ventricles, then from each ventricle into a large blood vessel connected to the top of the heart.
当心脏收缩的时候，腔室会变小，首先迫使血液从心房出来进入心室，然后从每个心室进入一个连在心脏上方的大血管。