stiffness
英 ['stɪfnɪs]
美['stɪfnɪs]
- n. 僵硬；坚硬；不自然；顽固
考试真题
- The result of constant muscle tension and stiffness of joints, many of them are avoidable, and simple flexibility training can prevent these by making muscles stronger and keeping joints lubricated (润滑 ).
出自-2013年6月阅读原文