Abstract: Articular cartilage is a thin layer of low-friction, wear-resistant, load-bearing, soft hydrated tissue covering articulating bony ends in diarthrodial joints.

摘 要 ：节软骨是覆盖于骨节面层低摩擦、耐磨损、负重水化组织。

The most common type of joint in the human body is the diarthrodial joint -- knuckles and shoulders are examples -- in which two bones come together in a capsule.

人体中最常节是运动节，如指节和肩节等，节处个囊状物把两根骨头结合在起。