他们说，有一天，对于现在必须开胸更换病变的脉瓣的低风险患者，这一新的过程可能是一种替换选择。

Someday, they say, the new procedure may be an alternative for the kind of lower-risk patients who now have to have their chests opened to replace diseased aortic valves.

youdao

这等到我们之后讲到成键时是非常重要的，现在先要记住，我们有两个节点，不好意思，是两个叶瓣，每个都是不同的相位。

So, that's going to be important later when we get to bonding, but just take note of it now, we have two nodes, or we have two lobes, excuse me, each with a separate phase.

youdao

它们长有一大片的皮瓣，在睡觉时可用作遮脸的罩子。

They have a large flap of skin that they use as a mask to cover their face when they sleep.

youdao