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.

严重心积液可行心穿刺，即借助穿刺针刺入心腔，吸除多余积液。

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.

移心，常会导致心炎，即心被感染引起的炎症，并引起心积液，即在心腔内积聚液体。

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.

心的内层是浆膜心，括心腔；心腔内含有少量液体，在心脏跳动起润滑作用。

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.

浆膜心分泌和吸收液体，心腔内的液体含量正常不超过50毫升，相于一小杯酒的液体量。