stiffness
英 ['st?fn?s]
美['st?fn?s]
- n. 僵硬；堅(jiān)硬；不自然；頑固
考試真題
- 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 (潤(rùn)滑 ).
出自-2013年6月閱讀原文