If there's a severe pericardial effusion, a pericardiocentesis can be done by inserting a needle into the pericardial cavity and draining the excess fluid.

严重心包行心包穿刺，借助穿刺针刺入心包腔，吸除多余。

When the pericardium is involved, it often leads to pericarditis —inflammation of the pericardium— and pericardial effusion, an accumulation of fluid in the pericardial cavity.

当转移心包时，通常会导致心包炎，心包被感染引起的炎症，并引起心包，心包腔内聚体。

The inner layer of the pouch is the serous pericardium that includes the pericardial cavity, and is filled with a small amount of fluid that lets the heart slip around as it beats.

心包的内层是浆膜心包，包括心包腔；心包腔内含有少量体，心脏跳动时起润滑作用。

The cells of the serous pericardium secrete and reabsorb the fluid, so usually there's no more than 50 milliliters of fluid in the pericardial cavity at one time - that's about as much as a shot glass.

浆膜心包分泌和吸收体，心包腔内的体含量正常不超过50毫升，相当于一小杯酒的体量。