blood gill

例句：

1. 1. The blood gills on the skin are visible under a microscope.
   皮肤上的毛细血管在显微镜下可见。
2. 2.Blood gills are tiny channels that carry oxygen and nutrients to the body's cells.
   血液丝状物是微小的通道，它们将氧气和营养物质输送到身体细胞中。
3. 3. The doctor examined the patient's blood gills for signs of infection.
   医生检查了病人的血液丝状物，以寻找感染的迹象。