可能短则几天，长则几个月，甚至整个冬天；不过你看它的心脏现在不怎么需要泵血，因为血液也冻结了。

It could be days or months, all winter in fact; but see the heart really doesn't need to do any pumping now, because the blood is frozen too.

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在实验室里，当海豹潜入到水面以下并停止呼吸时，它的心脏跳动得更慢，需要的氧气更少，动脉也会收缩。

In the laboratory, when the seal dives below the surface of the water and stops breathing, its heart beats more slowly, requiring less oxygen, and its arteries become constricted.

youdao

如果你把手放在心脏的部位，你会感觉到你的心跳，它迫使血液在你全身流动。

If you place your hand on your heart, you will feel your heart beating which forces blood to move around your body.

youdao

Here is as pacemaker and this pacemaker does the same thing that a heart pacemaker does, it generates periodic electrical signals.

它和心脏起搏器发挥的作用相似,发出周期性的电信号

耶鲁公开课 - 生物医学工程探索课程节选

It's a fully implantable artificial heart, and it was introduced about seven or eight years ago now.

它是一个完全植入式人工心脏,它是在七八年前发明

耶鲁公开课 - 生物医学工程探索课程节选

The sound of the guns carries inland, into the heart of England, and as it does it carries back also in time to Camelot and to "starlit Stonehenge."

枪声传入内陆，直接进入英格兰的心脏地区，在它这样做的同时它同时也及时传回,亚瑟王的宫殿还有星光闪耀的巨石阵“

耶鲁公开课 - 现代诗歌课程节选