translation.en: And what happens is this can be implanted into a human heart And once it's in the right spot, they remove the outer shell, and the heart valve, well, it gets this shape and at that moment it starts beating, instantly.
translation.zh: 就能被植入人的心脏里。 一旦进入正确的位置， 金属网便被移除， 这样，心脏瓣膜，就变成了这个形状， 这时，它立即就开始跳动。