The happiness from helping others is a kind of inner relief or self-soothe, or the content of our heart.

我们得到的是，心灵的平静，助人为乐的快乐，当然也有可能是内心的解脱，或者自我的安慰，心灵的满足。

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Ablation therapy. In this procedure, one or more catheters are threaded through your blood vessels to your inner heart.

消融术这种方法将一个或多个导管通过血管穿入心脏并定位于引起心率失常的病灶处。

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Noticing your inner thoughts and feelings, what pulls on your heart strings or gets your mind jazzed are good places to start.

你得关注你内心的想法和感受，最好是从关注是什么使你兴奋，又是什么使你思维活跃开始。

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For certain heart conditions, antibiotics are recommended about one hour before invasive medical procedures to prevent a condition called infective endocarditis, which is a potentially life-threatening bacterial infection of the inner lining or valve within the heart.

CNN: Why do I no longer need an antibiotic before teeth cleaning?