intimal

例句：

1. 1. The intimal layer of the heart is responsible for blood circulation.
   心脏的内层负责血液循环。
2. 2. The intimal lining of the artery is lined with tiny blood vessels.
   动脉的内层被微小血管覆盖。
3. 3. The intimal surface of the vessel was smooth and unblemished.
   该血管的内表面光滑无瑕。