capillary

例句：

1. 1.The doctor examined the patient's blood vessels and found a small capillary blockage.
   医生检查了患者的血管，发现一个小的毛细血管阻塞。
2. 2. Capillaries are tiny tubes that carry blood from the heart to the rest of the body.
   毛细血管是细小的管道，将血液从心脏输送到身体的其他部分。
3. 3.Blood flows through the capillaries in the skin, where it is filtered and re-enters the bloodstream.
   血液通过皮肤中的毛细血管流动，在那里被过滤并重新进入血液循环。