joint

/ʤɔɪnt/

(anatomy) the point of connection between two bones or elements of a skeleton (especially if it allows motion)

Chinese meaning: 关节

Regular exercise can help maintain flexibility in the knee joint as you age.

定期锻炼有助于随着年龄增长保持膝关节的灵活性。

The doctor recommended physical therapy to strengthen the shoulder joint after the injury.

医生建议进行物理治疗以加强受伤后的肩关节。