vein lead-zinc deposit

例句：

1. 1. The vein in my arm is swollen and painful.
   我手臂上的静脉肿胀且疼痛。
2. 2. Blood flows through the veins in our bodies.
   血液在我们的身体里通过静脉流动。
3. 3. Doctors use a special dye to visualize the veins in the body.
   医生使用一种特殊的染料来可视化体内的静脉。