capillary glass electrode

例句：

1. 1. The blood vessels in the skin are capillaries that carry oxygen and nutrients to the cells.
   皮肤中的血管是毛细管，它们将氧气和养分输送到细胞中。
2. 2. Capillaries are small channels in the skin that help regulate body temperature.
   毛细管是皮肤中的小通道，有助于调节体温。
3. 3. Capillaries play a crucial role in the immune system by filtering out harmful substances.
   毛细管在免疫系统中起着至关重要的作用，通过过滤有害物质。