脉管的

例句：

1. 1. The doctor examined the patient's pulse to check his health.
   医生检查了病人的脉搏来检查他的健康状况。
2. 2. Blood vessels are responsible for transporting oxygen and nutrients to the body's cells.
   血管负责将氧气和营养物质输送到身体细胞。
3. 3. The heart is a major source of blood flow in the human body.
   心脏是人体主要的血流量来源。