Stiffnesses
(stiffness 的复数) n. 坚硬, 呆板, 刻板\\n[医] 强直, 僵硬
🗣️ 情景例句
My visa is multi-entry; it allows me to exit the country and then re-enter, as ofter as I like.
我的签证是往返签证，我可以随便进出这个国家。
Two dogs over one bone seldom agree.
两狗啃一骨，相持难服输。
Experiments have proved that children can be instructed in swimming at a very early age.
实验证明，儿童在很小的时候就可以开始学习游泳。