It's involved with fine motor movement.

{\an8}（卡尔哈特 哥伦比亚大学神经科学家）涉及到精细动作。

Somebody with apraxia can move, do simple movements just fine but they can't coordinate their movements.

患有失用症的人可以移动，做简单的动作就可以了，但他们不能协调他们的动作。

But they're still incredibly clumsy when it comes to fine motor movements in small small joints, like our hands.

但是当涉及到像我们的手这样的小关节的精细运动时，它们仍然非常笨拙。