n.毛细管
名词capillary的复数形式.
Around each alveolus there are capillaries, which are very small blood vessels. 在每一肺泡周围有许多毛细管，它们是很小的血管。
Leaky capillaries increase fluid in the lungs and cause pulmonary edema. 毛细管渗液增加肺部液体，造成肺水肿。
