来自《耶鲁大学开放课程：生物医学工程探索第25集第25集》

which is made of a textile that can be sewn into the spot,

是由织物所制
to the ring of tissue where the heart valve goes.

能缝在正常的瓣环上
You can see that white material there,

就是这个白色的东西
there's a metal ring underneath it

下面还包裹这一个金属环
and on both sides of this ring there's a cage,

而在环的两边各套着一个阀盒
a small cage on the bottom and a larger cage on the top.

上大下小
The heart would be down here,

心脏就在这里
the ventricle would be down below this here.

心室在这下面
If there was pressure on this side, it would force the ball up.

如果这边压力大就会让球升起
When the pressure in the

如果左心室的压力
left ventricle got to be higher than the aorta,

高于主动脉
it would force the ball up.

就会让球升起