Threaded through a person's blood vessels, the sensor can provide blood pressure readings at the valve of the heart itself.

穿过一个人的血管, 传感器可以在心脏瓣膜提供血压读数。

The page he opened on was under the head of Anatomy, and the first passage that drew his eyes was on the valves of the heart.

他翻开的那一页是《解剖学》的标题下，最先映入眼帘的是心脏瓣膜。